Everything the adaptive question bank can teach and test in Ancient Wisdom, from foundations through advanced practice. Work through it in order, or start practicing and let the questions find your level.
Up to you are your own acts of mind: judgment, impulse, desire and aversion. Not up to you are your body, property, reputation and public office. Treat the second list as yours and you will be hindered and end up blaming others. This does not mean ceasing to care about externals: Epictetus says to use them with care, but with composure.
Epictetus says people are disturbed "not by the things which happen, but by the opinions about the things." Death is not terrible, he argues, or Socrates would have found it so; the judgment that it is terrible is what frightens. So when upset, blame not others but your own opinions. The untrained blame others, beginners blame themselves, and the fully trained blame no one.
Their test is benefit: as heat must warm, a real good must benefit, yet wealth and health can be used well or badly, so they are not goods. Only virtue, reason in its perfected state, benefits a person at all. This set them against schools that let external goods add to happiness, and led to the bold claim that a virtuous person stays happy even on the rack.
Things like health and wealth make no difference to happiness, but they have value and suit human nature, so a Stoic normally selects them over their opposites. In Latin, Cicero gave proegmena as praeposita, "preferred," and its opposite as "rejected." Chrysippus refused the view that all indifferents are equal. Critics asked how something can be worth pursuing yet not good, and scholars still debate it.
Each of the four is a kind of knowledge: prudence knows what is good, bad and indifferent, and courage knows what should be endured and feared. Lesser virtues such as magnanimity and endurance fall under them. Because the knowledge forms one system, anyone with one virtue has all of them, so no one is truly brave yet unjust. Some Stoics counted the virtues differently, from one to many.
Seneca argues that a blow foreseen long before lands more lightly, and chides those who never let themselves think about exile, want or mourning. Cicero says he borrows this long premeditation from the Cyrenaics, and records the Epicurean objection that it only adds suffering. He replies that nothing blunts grief more than knowing nothing is impossible, and quotes Terence: whatever turns out better than hoped is clear gain.
Nietzsche made amor fati, love of fate, a motto in The Gay Science and later called it his inmost nature. Epictetus and Marcus voice a related attitude in other words: Epictetus advises wishing that things happen just as they do happen, and Marcus tells himself to welcome, and even love, what is allotted to him as part of a providentially ordered whole.
Epictetus says to keep death, exile and every other dreaded thing before your eyes daily, so that you never think anything mean or want anything to excess. Marcus warns himself not to act as if he had ten thousand years to live: while you are alive and able, be good. The reminder works as a test of what is worth doing today, not as a mood of despair.
Seneca models it: plan to sail unless something intervenes, and to hold office if nothing hinders you. Chance still strikes the wise, he says, but never as a surprise, since things turn out as they foresaw, if not as they wished. Epictetus and Marcus ask the same: pursue aims with reservation, hupexairesis in Greek, conditional on what actually happens.
Marcus imagines being lifted above the earth to see the crowds, their festivals, voyages, births and deaths, and asks whether any of it is worth pride; few know your name and praise soon turns to blame. Seneca uses a view from the stars to show how small riches and borders are. The scholar Pierre Hadot named this exercise the view from above; the practice is ancient.
Marcus tells himself to consider how all things are woven together, the bond holy and hardly anything unconnected. In Cicero, the Stoic speaker Balbus points to tides that rise and fall with the moon, and the Academic critic Cotta grants a "sympathy (as the Greeks call it)" joining all parts of the universe, while denying it needs a god. For Stoics, this unity is why you act as a part of the whole.
In his discourse "On Attention," Epictetus warns that you cannot recover attention at will: a lapse builds a habit of not attending, then of putting it off. Nothing is done better inattentively, he argues, not woodwork, not steering a ship, not play. Never erring is impossible, but constant effort toward it is not, and saying you will start tomorrow means choosing carelessness today.
Translators of Epictetus render it volition or will, and it names the capacity more often than single acts of choosing. Epictetus argues it is unimpeded by nature: a decision forced from outside would not be a decision at all. Body, possessions, relationships, success and reputation are externals to it, so the self that judges and chooses is the one thing truly yours.
In Discourses 3.2 the first and most urgent concerns desire and aversion, since thwarted desire breeds passion; the second concerns impulse and duty toward family and city; the third guards assent against rash judgment, securing the other two. Scholars usually treat it as the foundation of his teaching, though this is now questioned. Pierre Hadot, who read Marcus through it, equated it with physics, ethics and logic; others reject that.
An impression arrives unbidden; assent, your agreement that it is true, is in your power, and the Stoics say your character depends on your acts of assent. Epictetus's drill is to say, "Appearances, wait for me a little," and test the impression first. Marcus shows how: if told someone speaks ill of you, that much was reported, but not that you were harmed.
Epictetus says he should not be unfeeling "like a statue," and allows you to groan so long as you do not groan inwardly. The Stoic target is passion, an impulse built on a false judgment that something is good or bad; correct the judgment and the feeling changes with it. Involuntary jolts such as turning pale remain, and the wise have rational good feelings of their own.
A passion, for the Stoics, is an impulse that overshoots reason because it treats something indifferent as good or bad. The wise person lacks these, yet keeps rational good feelings and involuntary first reactions. Diogenes Laertius records a telling contrast: a bad person can also be free of strong urges, but only from a hard and insensitive nature, which is not the Stoic ideal.
Both promise calm, but on different grounds. Epicurus tied happiness, a form of pleasure, to the absence of bodily pain and mental disturbance. The Stoics made virtue the only good and treated passions as errors of judgment, so calm follows from valuing things correctly, not from pleasure. Stoics prized tranquility too, but apatheia names their distinctive claim.
Diogenes Laertius lists them as rational counterparts: joy, a reasoned elation, answers pleasure; caution, a reasoned avoidance, answers fear; and wishing, a reasoned wanting, answers desire. They respond to real goods such as virtue, not to indifferents. Distress, the fourth passion, has no good counterpart on the list. The eupatheiai are why the sage is no unfeeling robot.
Marcus notes that people seek retreats in the country, by the sea or in the mountains, yet you can withdraw into your own mind whenever you choose, if it holds a few brief, basic principles to return to. A mind free of passions, he writes, is a citadel: nothing is more secure. The retreat is a reset that sends you back renewed to your affairs, not an escape from them.
In George Long's translation: "that which is an obstacle on the road helps us on this road." The context is people who obstruct Marcus's proper work. They can block a particular act, he says, but not his disposition, which acts conditionally and turns each hindrance into an aid. Epictetus makes a related point: abusive words become an occasion for patience.
His thesis, in Aubrey Stewart's translation: "we do not receive a short life, but we make it a short one." Life is long enough if well used, yet people spend it on ambition, other people's business and endless postponement, guarding their money while giving their time away. His remedy is to stop deferring, since only the present is yours, and to give time to philosophy.
Scholars now generally agree he wrote for his own moral improvement, restating doctrines he wanted ready to hand, much as Epictetus told students to write daily. That explains the unexplained jargon, the unidentifiable events and the slogans. The title Meditations comes from a modern editor; a tenth-century bishop called the work the writings to himself.
Diogenes apparently meant it as a refusal of special duty to his home city. The Stoics argued that shared reason gives all humans a common law, which makes the cosmos a kind of city. That did not mean abandoning local politics. Seneca speaks of two commonwealths, the vast one of gods and humans and the one your birth assigned: some serve both, some only one.
From birth, the Stoics argued, every animal perceives its own constitution as belonging to it and works to preserve it, like Seneca's turtle righting itself. Humans extend this sense of belonging to their children and from there toward all people, and mature reason comes to value consistent conduct above all. How this grounds justice is debated; Hierocles, whose ethics partly survives, is one source.
Diogenes Laertius reports that Zeno first used kathekon as a term, for acts reason selects as fitting, such as honoring parents or helping friends. In Cicero's On Ends, the Stoic Cato's example: returning a deposit is an appropriate act, and returning it justly makes it a right action, a katorthoma. Fools and the wise can both perform the appropriate act; only the wise do it from the consistent knowledge that makes it fully right.
For the Stoics even god is a body: the active principle, called reason (logos) and a designing fire or breath (pneuma), pervading the cosmos and ordering it down to the smallest detail. Pneuma holds objects together, and it becomes nature in plants and soul in animals. The cosmos repeats forever, alternating ordered worlds with periods when all is fire; Panaetius rejected this cycle.
Fate, for them, is an unbreakable chain of causes. Chrysippus answered the worry about responsibility with a cylinder: a push starts it moving, but its own shape makes it roll. Likewise an impression prompts you, but your assent comes from your own nature, which is why two people offered the same cake respond differently. Scholars call this a form of compatibilism.
B. Stoicism — applied judgment
His example: if your brother wrongs you, do not grip the act by the handle of his injustice, which cannot be borne, but by the fact that he is your brother, raised with you, which can. The wrong is still there; you choose which true description to act from. The same move works on a rude colleague: hold the situation by the handle that lets you respond well.
His reasoning: the person acted on what seemed right to him, not to you. If his opinion is false, he is the one harmed, since he is the one deceived. Seeing that, you can be mild toward someone who reviles you. Marcus makes the same move: people do wrong because they mistake what is good and bad, so teach them, and show them without anger.
Reputation sits beside body and property on his list of things outside your control. It is not the person who reviles you who insults you, he says, but your judgment that it is insulting. His model reply to gossip: say the speaker must not know your other faults, or he would have mentioned more. Delay helps too: buying time makes self-mastery easier.
His example is a trip to the public bath, where people splash, shove and steal. Go intending two things: to bathe, and to hold your own choices in line with nature. If the bath goes wrong, the second aim is still open, and only your own vexation can spoil it. A canceled flight works the same way: the schedule was never yours, but your response is.
Office and property are on Epictetus's list of things not up to you, so losing them leaves untouched what is yours. He even advises saying not "I have lost it" but that it was given back, treating it as on loan, like a traveler's inn. The fear of being nobody misplaces your worth, he argues: you can be somebody in what is up to you, such as being faithful and modest.
Explaining why Roman custom limited mourning, Seneca tells his mother that endless grief is a foolish weakness, while showing none reveals an unnatural hardness of heart; the middle way is to feel regret but keep it within bounds. Epictetus allows you to share a mourner's tears outwardly, while warning against lamenting inwardly. Scholars disagree whether Seneca's consolations aim at moderate grief or at its full removal.
He calls delay the greatest remedy, not to excuse the offense but to judge it correctly. Waiting lets the first glow fade; some wrongs shrink within an hour, and some vanish. Even if nothing changes, what you then do will look like deliberation, not rage. He adds that reports of injury deserve slow belief, and tells how Plato, angry with a slave, froze with his hand raised.
At the theater, he says, take no one's side, wish only that what happens should happen, and skip the shouting and violent emotion; afterward, talk only of what improves you. Applied to a news feed: keep your composure, cheer and jeer for no one, and ask of each item whether anything in it is up to you. Marcus notes how much trouble you avoid by not tracking what others say, do or think.
Acceptance concerns outcomes, not effort. Orthodox Stoics pursue preferred things like health energetically while treating the result as indifferent, much as ball players chase a worthless ball because they care about playing well. Seneca reports Zeno's rule that the wise will engage in public life unless something prevents it, and Marcus governed Rome from 161 to 180 CE.
In Cicero's On Ends, Book III, the Stoic Cato says an archer should do everything in his power to aim straight, pursuing the mark by careful selection rather than mere desire. He then likens wisdom to dancing, whose goal lies in the performance itself. On the Stoic view, a choice can be correct even when the outcome it aimed at never arrives.
Epictetus says you stay invincible by entering no contest you lack the power to win. That does not mean avoiding hard goals: Epictetus's ball players chase a ball worth nothing because they care about playing it well. So the goal of winning a contract becomes the goal of making the strongest honest case you can, while winning stays a preferred result, not the measure of success.
Poor or lame, magistrate or private citizen, your task is to act the assigned part well. He also reads duties off your roles: being a son, a brother, a citizen or a senator each names what you owe. Duties are measured by relationships, so a brother who wrongs you is still your brother, and the question is what you must do, not what he is doing.
Epictetus says that if a room is too smoky you may go out, since the door stands open; so no one is compelled to stay and lament, and whoever stays should stop complaining. He also told students to wait for God's signal, to remain where God had set them, and not to leave without reason or from cowardice. This records an ancient doctrine, not guidance. If you are in crisis in the US, call or text 988.
Facing death, chains or exile, he says, ask "What is mine, and what is not mine." You must go into exile, but no one stops you going cheerfully. His model is Agrippinus: told his trial was under way in the Senate, he went to take his usual exercise, and on hearing the sentence was banishment, asked about his property and set off to dine at Aricia.
Marcus opens Book 2 with a morning drill: tell yourself that today you will meet the meddling, the ungrateful, the arrogant and the envious. Epictetus gives the same advice before visiting a powerful man: picture being shut out, the door closed, the man indifferent. If it is your duty, go anyway, and if it goes badly, do not tell yourself the trip was not worth it.
Seneca follows Sextius, who asked himself each night which bad habit he had cured and in what way he was better. Seneca reviews his whole day once the lamp is out, hides nothing, then pardons himself on condition he does not repeat the fault. Epictetus quotes Pythagorean verses with the same pattern: scan the day, blame what was wrong, rejoice in what was right.
Choose exercises that serve the goal, he says, not stunts like rope-walking that win admiration. Since habit pulls desire toward things outside your control, oppose it with a contrary habit. If you want to practice endurance, do it for yourself: when parched, fill your mouth with cold water, spit it out and tell no one. He even suggests sometimes living like an invalid.
Epictetus asks why you rage at a thief who, like you, thinks fine clothes are a good; pity him instead, as blinded in the faculty that tells good from bad. He also urges describing acts without verdicts: say a man drinks much wine, not that he drinks badly, until you know his reasons. Marcus adds the practical step: teach them, or bear with them.
He lists them in advance: busybodies, the ungrateful, the arrogant, the deceitful. They behave this way, he reasons, because they do not know good from bad, while he shares with them reason and a portion of the divine. They cannot make him do wrong, and he cannot hate a kinsman, since people are made to work together, like hands, feet and the rows of teeth.
He says the wise do not love riches but prefer having them, letting them into the house but not the soul, since wealth gives virtue more room: generosity and temperance need material. The test is what losing it would do: "riches are slaves in the house of a wise man, but masters" in a fool's. Epictetus adds that being richer makes your property greater, not you better.
Seneca tutored the young Nero, advised him as emperor from 54 CE, and kept serving as the regime darkened despite asking to retire; in 65 he was ordered to take his own life. In On Leisure he quotes Zeno's rule, serve the state unless something prevents it, and reads the exceptions widely, including a state too corrupt to be helped. His essays argue the principle and do not narrate his own choices.
Critics posed the lazy argument: if recovery is fated, why call the doctor? Chrysippus replied that some events are co-fated: recovery is fated together with calling the doctor, so the call is not pointless. Cleanthes' prayer, quoted at the end of the Enchiridion, adds the attitude: follow fate willingly, since refusing only makes you wretched while you follow anyway.
C. Epicureanism
Epicurus made pleasure the goal of life, but by the best pleasure he meant a body without pain and a mind without disturbance, aponia and ataraxia. He denied that he meant feasts, drinking bouts or sex. What makes life pleasant, he wrote, is sober reasoning about what to choose and avoid, which drives out the false opinions behind most anxiety.
In everyday English an epicure is someone devoted to dainty, luxurious eating, and the word's first sense, a follower of Epicurus, is now obsolete. Epicurus said he was content with plain bread and water, held that luxury is enjoyed most by those who can do without it, and complained that critics twisted his view of pleasure into praise of the debauched.
Natural and necessary desires remove real pain, like drinking when thirsty. Natural but unnecessary ones only vary a pleasure, like wanting costly food. Empty desires, for crowns, statues or boundless wealth, rest on false opinion and can never be filled. The sorting is practical: it tells you which wants to meet and which to let go.
What the body truly needs has a natural limit and is cheap to supply; once the pain of want is gone, bodily pleasure can be varied but not increased. Wants for fame, power or ever more money have no such limit, which is why chasing them leaves people anxious instead of satisfied, exposed to the very dangers they hoped to escape.
Kinetic pleasure is felt in a process, such as joy or, on a common reading, drinking when thirsty. Katastematic pleasure, often called 'static' after Cicero though the label misleads, is the state of a body without pain and a mind without disturbance, and Epicurus counted it the most complete pleasure. Where exactly the line falls is debated, and critics such as the Cyrenaics and Cicero called the settled state neutral, not pleasant.
All good and bad lies in sensation, and death ends sensation, so there is no one left for death to harm. Epicurus also called it foolish to be pained in advance by what will cause no pain when it arrives. The target is fear of being dead, not of dying, and he said grasping this makes mortal life sweeter by ending the craving for endless time.
Before you were born, ages passed, the wars with Carthage among them, and none of it touched you. Lucretius treats that past as a mirror that nature holds up to show the time after death, and asks what in it could be frightening. If you feel calm about not existing then, he argues, the same calm fits not existing later. Scholars call this the symmetry argument.
In the wording found in Philodemus, a first-century BCE Epicurean, the four are: god is not to be feared, death is not to be dreaded, the good is easy to get, and the bad is easy to bear. It was meant to be memorized and kept in mind when making choices, and the same four points appear together near the end of the Letter to Menoeceus.
Of all that wisdom supplies for a whole life's happiness, Epicurus put friendship first, and his followers sought security in a community of friends instead of in politics. One saying holds that friendship starts from usefulness yet is prized for its own sake; how that fits his hedonism was disputed even among later Epicureans.
Epicurus bought the garden for eighty minae, and friends came from many places to live there with him in a simple way, drinking mostly water with a small cup of light wine. Diogenes Laertius lists a married couple, Leonteus and Themista, among his followers, says his slaves joined in the philosophical work, and records that his will freed several of them.
Epicurus wrote that the wise person will not get tangled up in affairs of state; for Epicureans a public career was a poor route to security, and friends a safer one. Plutarch later attacked the stance in a work titled Is 'Live Unnoticed' Well Said? It was a default, not a ban: special circumstances could justify taking part, and some Roman Epicureans held public roles.
In the Principal Doctrines, justice is an agreement people make for mutual advantage, to neither injure one another nor be injured. Animals and peoples unable to make such pacts have neither justice nor injustice. A law is just only while it serves that shared usefulness, so what is just can vary by place and time. Injustice is bad because the fear of being caught never fully goes away.
He was no atheist: the gods exist, but a blessed and imperishable being has no troubles and causes none, so it feels neither anger nor gratitude, which belong to the weak. The impious one, he said, is not the person who rejects the crowd's gods but the one who credits the gods with the crowd's opinions of them. He encouraged ordinary worship, and for Epicureans prayer meant taking in an image of divine happiness, not asking favors.
Following Democritus, Epicurus taught that nature is made of tiny, solid, indivisible bodies too small to see, plus the void they move through. The soul is a fine arrangement of atoms that scatters when the body dies, so no punishment waits after death. That is why he said you cannot be fully free of fear without understanding how nature works.
Falling straight down at equal speeds, atoms would never meet, so Lucretius posits a minimal deviation at no fixed time or place. He also uses it to break the endless chain of causes that would leave no room for free will. Lucretius is the only surviving Epicurean to describe it, though later sources credit it to Epicurus, and how it explains free choice is still debated.
De Rerum Natura (On the Nature of Things) is a six-book Latin poem of the first century BCE and the fullest surviving source for Epicurean atomism. Lucretius likens his verse to honey on the rim of a cup that tricks a child into drinking bitter medicine: the poetry makes a harsh-seeming doctrine palatable, while the cure is the physics, which loosens the grip of religious dread.
The senses, he held, report without adding or taking away anything, so error enters only with the opinions built on them. A preconception (prolepsis) is a general notion left by repeated experience, which lets you recognize a distant shape as a horse or an ox. An opinion counts as true when evidence confirms it and nothing contradicts it, so you wait until you are close before judging that a far-off shape is a tower.
Prudence (phronesis, practical wisdom) is the root from which the other virtues spring, Epicurus wrote. It shows that no one can live pleasantly without living prudently, honorably and justly, or live that way without pleasure. In practice it means reasoning well about your needs, such as seeing that some pleasures now bring larger pains later and should be passed up.
Pleasure is the standard for every choice, yet you weigh each option by what follows: pass up a pleasure that brings greater trouble, and accept a pain that leads to greater pleasure. A heavy night of drinking fails the test. The aim is not piling up thrills but staying free of pain and distress, and plain, cheap habits serve it by protecting health and easing the fear of losing luxuries.
For Epicurus the goal is a body free of pain and a mind free of distress, and the virtues matter because no one lives pleasantly without them. For the Stoics virtue is the sole good, and health, wealth and pleasure are indifferent, though some are preferred. Both tie happiness to a calm that rests more on you than on fortune. On politics they split: Epicurus's sage stays out unless circumstances demand, Zeno's takes part unless prevented.
Like the Principal Doctrines that Diogenes Laertius quotes, these short sayings condense the core teachings so they are easy to remember. Several concern friendship: one holds that it starts from usefulness but is prized for its own sake, another that a wise person feels a friend's torture as his own. Another names freedom as the greatest benefit of being self-sufficient.
He set out the basic tenets of Epicureanism, sayings plus explanation, for his fellow citizens, a striking act of public service from a school known for avoiding public life. The site, in southwestern Turkey, is still only partly excavated, new fragments keep being published, and the text is a major source for Epicurean thought. The city's name is also spelled Oenoanda.
D. Socrates, Plato, and Aristotle
Socrates says it after the jury has convicted him, while he weighs what penalty to propose. Exile could only work if he kept silent abroad, and he refuses: to talk about virtue every day, examining himself and others, is in his view the greatest good a person can have. Before the verdict he had already told the jury he would never change his ways, even if he had to die many times over.
When the Delphic oracle said no one was wiser than Socrates, he tested it by questioning politicians, poets and craftsmen. Each believed he knew more than he did; the craftsmen truly knew their trades but assumed expertise beyond them. Socrates concluded that his advantage was small but real: "I neither know nor think that I know." He took the oracle to mean that human wisdom is worth little and that the wisest see this.
In the elenchus (Greek for refutation), Socrates asks someone confident about a virtue what it is, then draws out that person's other beliefs until the proposed answer clashes with them. Answers typically fail by being too narrow or too wide. Euthyphro first defines piety by his own prosecution, and Socrates replies that he wants not examples but the one idea that makes every pious act pious. Such talks usually end with an admission of ignorance.
At a minimum, Socratic irony is Socrates insisting he knows nothing of importance and only wants to hear from others, while still controlling where the discussion goes. In Republic I, Thrasymachus calls this his ironical style, a trick for asking questions while never offering an answer of his own. Beyond that minimum, what the irony amounts to is disputed, so a claim that it was pure pose or pure sincerity is an interpretation.
Socrates' daimonion was a kind of inner voice he took to be divine; he says it "always forbids but never commands." It kept him out of politics and often stopped him even over small matters. The charge of new divinities pointed at it. On the day of his trial it never once opposed him, which he took as a sign his fate was good. It was not a conscience: often it had nothing to do with right and wrong.
The charge said Socrates corrupted the young and rejected the city's gods for new divinities of his own. He was convicted narrowly: thirty votes the other way would have acquitted him. As his penalty he first proposed public maintenance, the honor given Olympic victors, then a fine; the jury chose death. In the Crito he refuses to flee, since returning a wrong for a wrong is never right, and breaking the laws to save himself would be one.
Most people, Socrates notes in the Protagoras, think knowledge can be overpowered by pleasure, anger or fear and pushed around like a slave. He argues the reverse: if you truly know good from bad, that knowledge rules what you do, and no one willingly goes after what they believe is bad. Being overcome by pleasure is really ignorance, a failure to measure goods and evils correctly. Aristotle later rejects the view that virtue is only knowledge.
Prisoners chained since childhood see only shadows that a fire casts of objects carried behind them, and take the shadows for reality; Socrates says they are "like ourselves." One freed prisoner is pained by the light, then slowly sees real things and at last the sun. Plato decodes it: the cave is the visible world, its fire the sun, the climb the soul's rise to the intelligible, and the last thing seen is the Good.
Plato distinguishes the many things that appear beautiful, just or equal from the one thing that beauty, justice or equality really is: its Form, eternal and changeless, and not located in space or time. In the Phaedo, the same sticks can look equal at one time and unequal at another, but Equality itself is never unequal, so it is not any stick. Plato's own dialogues also press hard puzzles about how Forms can be known.
In Republic VI, Socrates cuts a line into visible and intelligible parts, then divides each again. Lowest are images, such as shadows and reflections; next come the animals and made things they copy. Above those, geometry reasons from assumptions using drawn figures; at the top, dialectic climbs past assumptions to a first principle, using Forms alone. The matching states are perception of shadows, conviction, understanding and reason.
In Republic IV, Socrates separates the part that reasons from the part that hungers and desires, then adds spirit, the seat of anger. His evidence is Leontius, who longed to look at corpses, fought the urge, gave in, and cursed his own eyes: anger at war with desire. A just person lets reason rule, with spirit as its ally and appetite kept to its role, like high, middle and low notes tuned together.
In Republic V, Socrates says cities will have no rest from their evils until philosophers become kings or rulers take up philosophy. Book VII adds a twist: those who have seen the Good would rather stay in its light, so the founders must make them go back down into the cave and govern. The reluctance is the point, since a city whose rulers least want office is the best run, and one whose rulers crave it, the worst.
Meno's puzzle says you cannot search for what you know, since you already know it, or for what you do not know, since you would not know what to look for. Socrates answers that the soul is immortal and already knows, so learning is recollection. An untaught slave boy, after wrong guesses, finds that the square on the diagonal doubles a square. Socrates then admits he is unsure of details, but not that inquiry beats giving up.
Aristotle uses eudaimonia for the highest good, sought for its own sake, and he treats it as the same as living well. It judges a life rather than describing a mood, and it is an activity of the soul in line with virtue, not a state you could have while asleep. It also takes a complete life: one swallow does not make a spring, and Priam, ruined in old age, is not called happy.
Aristotle's function argument (ergon, Greek for work or task) starts from crafts: a harpist's work is playing, and a good harpist plays well. Plants share nutrition and growth with us, and horses and oxen share sensation, so the distinctively human work must be an active life guided by reason. The human good is then that activity done well, in line with virtue, across a complete life.
Aristotle sorts what is in the soul into feelings, capacities and states, and places virtue among the states. It is not a feeling, since no one is praised merely for being afraid or angry, and not a capacity, since capacities come by nature and no one is good by nature. A hexis is a disposition, formed by habit, to feel and act as you should, which breaks with the thesis of Plato's early dialogues that virtue is only knowledge.
Aristotle holds that moral virtue does not come by nature: a stone thrown upward ten thousand times never learns to rise, but people become just or brave by doing just or brave acts, as builders learn by building. Doing a just act is not yet acting justly: that takes knowing what you do, choosing it for its own sake, and a stable character, and those grow from repeated practice. Full virtue also needs practical wisdom.
For Aristotle, each virtue of character lies between two vices: courage sits between the coward, who fears too much, and the rash person, who fears too little. The mean is relative to you, not an arithmetic midpoint. If ten pounds of food is too much and two is too little, a trainer will not simply order six, which is too little for the athlete Milo and too much for a beginner. Finding the mean takes judgment of the case.
The mean is not a call to feel everything moderately. The right amount of anger is whatever the situation warrants, sometimes a great deal, not a point halfway between none and the most possible. And some feelings and acts have no mean, because their names already imply badness: envy, shamelessness, malevolence, theft, adultery, homicide. There is no right time or partner for adultery; doing it at all is wrong.
Practical wisdom (phronesis) is the ability to deliberate well about what serves living well; Aristotle denies it is a craft, and it deals only with what could be otherwise. Pericles is his example. Theoretical wisdom unites scientific knowledge with insight into first principles about the highest things; Thales and Anaxagoras had it, yet were not called practically wise, seeming ignorant of their own interests. Aristotle ranks it higher.
Akrasia (literally lack of mastery) is doing what you judge worse. Socrates denied it could happen; Aristotle says that clashes with plain facts. He splits it into weakness, where you resolve and then give in to feeling, and impetuosity, where feeling acts before you deliberate. Yet he grants Socrates a point: in the grip of passion you know only as a drunk person does who recites verses he cannot then use.
Aristotle says people like each other for being useful, pleasant or good, which yields three kinds of friendship. In the first two you love what you get rather than who the friend is, so the bond ends when the benefit or fun does, as with the young, whose friendships shift with their pleasures. Friends alike in goodness wish each other well for the other's own sake, and their friendship lasts while they stay good.
In Ethics X, Aristotle argues that perfect happiness is theoria, contemplation by someone who already has understanding, not the process of learning. It exercises the best thing in us, can run more continuously than other activity, can be done alone, needs few outside goods, and is valued for itself; it is also what he thinks the gods do. A life of practical virtue and politics he still counts happy, in a second way.
Happiness is virtuous activity, but Aristotle grants it needs equipment: friends, money and influence are tools for acting well, and losing children or friends to death mars it. Someone stripped of such goods has few chances to exercise virtue. Still, he denies that happiness is simply luck, since we bear much of the responsibility for becoming virtuous, and he says a happy person needs only moderate goods, not great ones.
Praise and blame go to voluntary acts, so Aristotle defines the exceptions. An act is forced when its source lies outside you and you add nothing, as when a wind carries you off. Ignorance excuses only when you did not know the particulars, such as that a spear you thought blunted was sharp, not when you are ignorant of what you ought to do. Throwing cargo overboard in a storm is mixed but closer to voluntary.
Aristotle reports that Plato separated universals from changing things and called them Forms. He faults the theory for failing to explain change and coming to be, and in the Ethics he denies there is one Good shared by all good things, while calling the Forms' authors friends. His own analysis treats a material thing as matter given form: a bronze sphere's roundness is not a second thing apart from its bronze.
Aristotle ties knowing a thing to grasping its why, so each of his four causes answers a different why-question. Explaining how a bronze statue is made uses all four: the bronze is the material cause, its shape the formal cause, the art of bronze-casting (not the artisan) the efficient cause, where the change comes from, and the finished statue, for whose sake every step is done, the final cause.
In Politics I, Aristotle argues the city exists by nature: villages join into a city, first so that people can live and then so they can live well. Humans are more social than bees or herds, since only humans have speech to share ideas of useful and harmful, just and unjust. Someone who cannot share in a community, or is so self-sufficient as to need none, is no part of a city: a beast or a god.
After the Academy's skeptical period, Antiochus and Eudorus in the 1st century BCE revived reading Plato as doctrine. Later Platonists grouped under the modern label Middle Platonism include Plutarch and Numenius. Some, such as Alcinous, placed the Forms in God's mind as thoughts. Numenius built three ranked principles much like Plotinus's One, Intellect and Soul, and Plotinus was seen in his day as continuing such work.
Plotinus (about 204 to 270 CE), usually called the founder of Neoplatonism, made the One or the Good the source of everything, beyond being and beyond description. From its activity comes Intellect, holding the Forms, then Soul, eternally rather than as a creation in time. "Emanation" is the common label but misleads, since nothing material flows out. Through purifying practice, the soul can reach union with the One.
E. The other Greek schools
He slept in a doubled-up cloak, carried his food in a wallet, and made a large jar in a temple his house. To toughen himself he rolled in hot sand in summer and hugged snow-covered statues in winter. He ate in the marketplace, reasoning that if eating is not absurd, eating in public is not either. Without practice of body and mind together, he said, nothing good is achieved.
Ancient tradition traces the school to Antisthenes, a follower of Socrates who taught that virtue alone suffices for happiness, though that link is now seen as weak. Diogenes set nature against convention: the natural life is simpler, and with training it is the happy life. The name is linked to the Greek for 'dog.' The modern cynic, who thinks everyone acts from self-interest, keeps only the scorn.
In the story, Diogenes was sitting in the sun when Alexander stood beside him and told him to ask for whatever he liked; the answer was to stop shading him. The reply sums up the Cynic indifference to power: a world conqueror had nothing Diogenes wanted. The same collection reports Alexander saying that if he were not Alexander, he would like to be Diogenes.
Socrates could be careless of convention and of his own bodily needs, and Diogenes seems to have pushed that detachment from what most people prize further. The quip captures both the kinship and the excess. Like most stories about the Cynics, it comes from late and often disputed reports, so read it as a sign of how Diogenes was seen, not as a recorded conversation.
The school began with Aristippus of Cyrene, a close associate of Socrates; its standard doctrine came from his grandson, who was taught by Aristippus's daughter Arete. The goal is not happiness but each pleasure as it happens; all pleasures are equally good, and bodily ones beat mental ones. Absence of pain is no pleasure, and one Cyrenaic argued that Epicurus's painless state is the condition of a sleeper or a corpse.
Seeing white, you can be sure you are being affected in a white way, but not that the object is white. To report these inner states, called pathe (affects), they coined verbs such as 'we are being whitened' that claim nothing about the world. Epicureans also allowed an inner awareness of affects, but treated them as signs of objects, not as the only things that can be known.
The famous line that you cannot step into the same river twice is a later paraphrase, found in Plato and Plutarch. The fragment many scholars accept as his own keeps the rivers the same while the waters change. Read that way, the point is not that nothing lasts but that a river, like a living body, persists through constant turnover of its matter. The older reading of total flux still has defenders.
He presents his message as the voice of the Logos, Greek for word or account, which exists apart from him: heeding it, he says, the wise grant that all is one. Though it is common to everyone, most people act as if each had a private wisdom. Conflict is not disorder in this picture: war is common, strife is justice, and opposites such as waking and sleeping turn into each other.
In a poem framed as a goddess's revelation, he argues that what is not can be neither thought nor said, so What Is has no birth or death, is whole and uniform, and stays unmoved. Later Greeks took him to mean change is illusory, and the atomists and other pluralists built their theories to answer him. Scholars still dispute that reading, partly because the poem goes on to give a long cosmology.
Aristotle reports that Thales made water the first principle. Anaximander chose the apeiron, an indefinite, boundless stuff, and Anaximenes chose air, which thins into fire and thickens into wind, cloud, water, earth and stone. They explained nature without gods stepping in from outside. Aristotle read them as saying all things are still that one stuff, but some scholars think they meant an original stuff that turns into other things.
With his teacher Leucippus he answered Parmenides by positing countless unchanging, indivisible bodies that only rearrange, so change never needs something to come from nothing. His ethics survives as scattered sayings of uncertain authenticity: the good is an inner state, cheerfulness, reached by moderating desire and loosening fortune's hold. Antiquity called him the laughing philosopher.
His early fame rested less on mathematics than on teaching about the soul's rebirth, religious ritual, and a strict rule of life with food rules and self-discipline that still had followers a century later. On the consensus view his cosmos ran on number ratios like those of musical harmony, but he probably did not prove the theorem named for him. Aristotle's summary that for Pythagoreans things are numbers may be his own inference.
In fifth-century BCE Greece these professional educators toured cities and charged fees to teach public speaking and how to succeed in life, and some grew rich. Protagoras opened a work with "Man is the measure of all things," often read as relativism, which Plato glossed as: things are for you as they appear to you. Much of what is known about them comes from Plato, and scholars now think they have long been underrated.
Pyrrho of Elis wrote nothing and probably held positive views about reality; the movement named for him arguably begins with Aenesidemus in the first century BCE and was later summed up by Sextus Empiricus. The skeptic finds rival views equally weighty, withholds assent, and lives by appearances, custom and natural needs. Holding no view on what is good or bad by nature, the skeptic still feels hunger or cold but suffers less from them.
Sextus describes skepticism as an ability to set appearances and thoughts against one another, not as a set of beliefs, and suspension is where that ability lands. Tranquility then arrives unplanned, like the painter Apelles who, failing to paint a horse's foam, threw his sponge at the picture and got the effect. Calm follows suspension, Sextus says, as a shadow follows a body.
Press for a reason and you face a regress, since each reason needs another; stop anywhere and you rest on a bare assumption; lean on what you meant to prove and you argue in a circle. Add standing disagreement, and the point that things appear only relative to an observer, and nothing offered so far settles the matter. Almost nothing is known about Agrippa himself.
His Outlines of Pyrrhonism opens with the only surviving general account of the movement, then turns skeptical methods on dogmatic claims in logic, physics and ethics. He also wrote against experts in grammar, rhetoric, mathematics, astrology and music. His name marks him as a member of the Empiricist school of medicine, though he said Pyrrhonists might lean instead toward the rival Methodists.
From about the 260s BCE the Academy revived Socrates the questioner, testing opponents' views on their own premises. Its main target was the Stoic claim that a cognitive impression marks itself as true; the skeptics answered that a false impression could look exactly the same, as one egg can look like another. Carneades later let the skeptic act on what is persuasive, checked harder when more is at stake.
Zeno, who had studied with the Cynic Crates, taught in a colonnade decorated with paintings, the Stoa Poikile, and his pupils took the name Stoics from it. Cleanthes of Assos, a former boxer who drew water at night to support his studies, succeeded him. Chrysippus of Soli, the school's foremost theorist and systematizer, led it from about 230 to 206 BCE.
Ancient readers said that without Chrysippus there would have been no Stoa, and many ranked him the greatest logician of antiquity. Where Aristotle's logic relates terms, his relates whole propositions joined by words such as 'if,' 'and' and 'either...or,' and it rests on five basic argument forms, one being: if p then q; p; so q. He wrote over 300 books on logic, now nearly all lost.
Cynics sought it by shedding convention and living by nature. Epicureans named freedom from pain and distress the goal and virtue the only road to it. Stoics made virtue itself the only good, so luck cannot touch happiness. Pyrrhonists reached calm by suspending judgment, crediting a practice rather than virtue. The shared thread is detachment: from convention, from goods that fortune can take away, or, for the skeptic, from belief itself.
Epicurus likened philosophy that fails to heal the soul to medicine that fails to cure the body, and gave newcomers exercises and short maxims to memorize. The Stoics pictured logic as the wall around a field, physics as its soil and ethics as its fruit. Diogenes the Cynic held that nothing is perfected without practice, and Sextus called skepticism an ability, not a body of doctrine.
F. Buddhism as philosophy
In his first sermon the Buddha set out four claims: there is dukkha (suffering or unsatisfactoriness), it has an origin, it can cease, and a path leads to its cessation. The first truth does not say that every moment of life feels bad. Read the four together, like a physician's report: the illness, its cause, its cure, and the course of treatment.
Tanha, Pali for thirst, is the craving the second noble truth names as the origin of dukkha: a restless, never-satisfied craving for pleasure and for continued existence. It is narrower than the English word desire, since the Buddha did not condemn good desires, such as the effort to reach nirvana. The Dhammapada warns that a felled tree regrows while its root is safe, and so pain returns until craving is uprooted.
The path named in the fourth truth has eight factors, each prefixed samma, right: view, resolve, speech, conduct, livelihood, effort, mindfulness and concentration (samadhi), which one 1921 rendering calls rapture. It mentions no ceremony, austerities or gods. The Visuddhimagga, a Theravada compendium, groups the practice that loosens craving under sila (discipline), samadhi (concentration) and panna (wisdom).
Buddhist thought ascribes three marks to all conditioned existence: dukkha (unsatisfactoriness), anicca (impermanence) and anatta (no abiding self). They interlock: even pleasant states disappoint, because they change as the things they depend on change. The Dhammapada gives each mark a verse, and translations differ; one old version renders the third "All forms are unreal," another as compounded states being "without a self."
Anatta, non-self, says that none of the five skandhas, the bodily and mental components of a person, is a self. One early argument: a self would be permanent; none of the five is permanent; so none is a self. It is not materialism and does not deny that a life runs on as a series. Scholars still debate whether the Buddha ruled out every self or only an empirical one.
Anicca, impermanence, says that every compounded thing changes, including feelings and perceptions as well as the body. The doctrine that things last only an instant is a later Buddhist development, not the early sense of the word. In the early argument for non-self, the body counts as impermanent because it lasts one lifetime, and mental states because each lasts only as long as one contact between sense and object.
The Sallatha Sutta, a Pali text whose title means the arrow or the dart, compares a painful feeling to being struck by an arrow. A trained practitioner and an untrained person both feel that first arrow. The untrained person then piles on distress, worry and despair, as if struck by a second arrow; the trained one is spared it. The first arrow is the sensation, the second the mental suffering added to it.
The first sermon opens by rejecting two extremes, sensual indulgence and self-mortification, as both profitless, and calls the path between them the middle way. The phrase has a second, metaphysical sense: a middle between eternalism, which holds that persons last forever, and annihilationism, which holds that they simply end, reached by rejecting the "I" that both views presuppose.
In the later legend the prince, kept in luxury, is shown an old man, a sick man, a corpse and a monk of happy face, and resolves to leave home. The older Pali account is starker: severe fasting left him near death but no wiser, so he ate again and turned to meditation, and his five companions, losing faith in him, left. His first sermon would reject that extreme.
The Dhammapada's first verse makes thought the source of what a person becomes. One old translation reads "All that we are is the result of what we have thought"; another says all states arising "have mind for their causing." The point is ethical: speak or act with a corrupt mind and pain follows, as a cart wheel follows the ox; act with a pure one and happiness follows like a shadow.
In the raft simile, a traveler on a dangerous shore, with no boat or bridge across a wide water, binds reeds and branches into a raft and crosses. Carrying it on his head afterward would be foolish; the right act is to leave it on the bank. The Buddha says his teaching is like that raft, made for crossing over and not for holding on to, so even right teachings are let go, and wrong ones all the more.
Pressed on whether the world is eternal or whether a saint exists after death, the Buddha answered with a simile: a man shot with a poisoned arrow who refuses treatment until he learns who shot it and what the bow and feathers were made of would die first. One reading stresses priority, not hostility to thought: elsewhere he answers with a fire gone out, since asking which way it went wrongly assumes it still exists.
Dependent origination (paticcasamuppada) states the principle of conditioned arising: if this is, that is; if this is not, that is not. Applied to suffering it becomes a chain running from ignorance through sensation, craving and clinging to birth, old age and death. The texts give longer and shorter versions of the chain, and the twelve-link list is likely a later compilation, so the principle matters more than the count.
Karma literally means action, but the Buddha held that what counts is the intention behind a bodily, verbal or mental act, not the movement itself. In a modern illustration, a parrot squawking a curse insults no one. Scholars see in this a shift from a ritual view of action to an ethical one. Nor is karma simply fate: past deeds bear fruit, but people keep making fresh karma, and the Pali texts treat Makkhali Gosala's fatalism as a rival view.
Nirvana originally named the putting out of three fires, lust, hatred and delusion, and the early texts treat it as reachable in this life. Most of its descriptions are negative: unborn, uncompounded, beyond earth, water, fire and air. Those negations do not mean annihilation. The Dhammapada calls nirvana the highest happiness, though a 1921 history adds that it transcends ordinary pleasure and pain.
The Five Precepts are the basic commitments that mark someone as a Buddhist layperson: to refrain from killing, stealing, sexual misconduct, lying and drunkenness. Monks and nuns take stricter vows that rule out all sexual activity. Keeping the precepts is said to prevent rebirth in the lower realms and build self-respect. Drunkenness alone is missing from a related list of ten bad actions, perhaps because it harms others only indirectly.
The brahmaviharas, or Four Immeasurables, are lovingkindness (metta), the wish that others be happy; compassion (karuna), the wish that they be free of suffering; joy, delight in their happiness and good qualities, which needs the absence of envy; and equanimity, seeing without preference, which lets the other three reach all beings equally. Awakened people are said to rest and act from them.
Right speech, the third factor of the Eightfold Path, is defined by four abstentions: from lying; from slander, divisive talk that sets friends against each other; from harsh words spoken in anger to wound; and from idle chatter that fills time without saying anything of value. Like much of the path, it is phrased as restraint rather than as a list of virtues to display.
Right livelihood, a factor of the Eightfold Path, means giving up wrong occupations and earning a living by work that brings no hurt or danger to any living thing. One list names five wrong trades, among them slave dealing, butchery, keeping a tavern and selling poison, and hunting and fishing are classed as wrong livelihood as well. The test is the harm a job does to others.
Most Theravada practitioners aim to become an arhat, a saint for whom this life is the last and who enters nirvana at death. Serious Mahayanists vow to become Buddhas for the sake of all beings, the bodhisattva vow. Mahayana texts give the other path a pejorative name, the lesser vehicle, and fault it for lacking compassion, but that may be a straw man: Theravada also prizes lovingkindness and compassion.
Sunyata, emptiness, is the hallmark claim of the Madhyamaka school, built on Nagarjuna: all things lack svabhava, inherent existence, so nothing exists as an independent foundation apart from everything else. Critics have long read this as nihilism, the view that nothing exists, but Madhyamaka thinkers say it avoids both extremes. Emptiness is not a hidden deeper reality; it corrects a wrong picture of how things exist.
Chan, known in Japan as Zen, described itself in four phrases: a special transmission outside the scriptures, not founded on words, directly pointing to the human mind, and seeing one's nature to become a Buddha. Its lineage story runs from the Buddha's held-up flower to Bodhidharma, though scholars now treat much of it as later invention. In Rinzai training, a koan is a riddle-like case built so reasoning alone cannot solve it.
G. Taoism and Confucianism
Wu wei, usually translated nonaction, does not mean total inaction. In the Laozi it is set against action driven by self-serving desire: a ruler free of grasping would let the world settle of its own accord. Chapter 37 states the paradox that the Tao does nothing for the sake of doing, and so nothing is left undone. Some translators prefer effortless or non-coercive action.
Chapter 78 calls water the softest and weakest thing in the world, yet nothing outdoes it at attacking what is firm and strong. Then comes the catch: everyone knows the soft overcomes the hard, but no one manages to act on it. Chapter 8 adds that water benefits all things while settling, without striving, in the low places people dislike, which is why its way is near the Tao.
The first line says any Tao you can put into words is not the constant Tao, and the next says the same of any name that can be named. The verb there is dao itself, which can also mean to speak. Legge's 19th-century version reads it as a path, the Tao that "can be trodden," but most traditional commentators took it as speech. Chapter 25 adds: "I do not know its name."
Pu, a plain uncarved block of wood, is the Laozi's image for unaffected simplicity and for the integrity of a person who lives by the Tao. The world treasures finely carved, ornate objects, and beside them the block looks worthless. Yet in chapter 28 unwrought material, once divided up, is what vessels are made from, so the plain block is the source and the crafted things come after it.
Chapter 33 sets outward and inward achievements side by side: knowing other people and knowing yourself, overcoming others and overcoming yourself. In Legge's wording, knowing others makes you discerning while knowing yourself makes you intelligent, and the one who overcomes others is strong but the one who overcomes himself is mighty. The same chapter says that being satisfied with your lot is wealth.
Yang first named the sunny south side of a mountain and yin the shaded north side; later yang meant the forceful and bright, yin the yielding and obscure. They are relative labels: the same thing can be yang in one relationship and yin in another. The Laozi has all things carry yin and embrace yang (ch. 42). A Han-era text later turned the pair into ranks, ruler yang and minister yin.
Te (also spelled de) is the second word of Tao Te Ching and is usually rendered virtue, though translators also use potency, efficacy, integrity or power. Traditional commentators linked it to a word meaning to obtain: te is what a being gets from the Tao, a latent power that makes it what it is. Chapter 38 ranks highest those whose te never seeks to show itself.
Chapter 40 says the Tao moves by reversal; in Legge's verse its movement "by contraries proceeds," and weakness marks its course. Elsewhere things grow luxuriantly and then return to their root (ch. 16), and the Tao flows on, grows remote, and comes back (ch. 25). Reversal also means the Daoist life looks like the opposite of normal living, a complete revaluation of values.
Chapter 11 points to three empty spaces: the hole in a wheel's hub where the axle goes (Legge's "nave" is the hub), the hollow inside a clay vessel, and the room left when doors and windows are cut from walls. In each, the use depends on what is not there. The chapter credits both halves: what exists gives the benefit, what is absent the usefulness. Wu, not having, is a central Laozi idea.
Chapter 60 opens with the line "Governing a great state is like cooking small fish," and the chapter does not spell out the image. Chapter 57 makes the case for a light hand: more prohibitions bring more poverty and more display of laws more thieves, while a ruler who does nothing on purpose lets the people transform themselves. The Laozi also condemns war, cruel punishment and heavy taxation.
Zhuangzi (Chuang Tzu in Giles's 1889 translation) dreams he is a butterfly, then wakes unsure whether he was a man dreaming of a butterfly or is now a butterfly dreaming of a man. Yet the story insists there must be a difference, and calls the shift "things change," which Giles translates as metempsychosis, a soul passing into another body. One reading takes it as mild skepticism: a shift that feels like waking from error might run either way.
An artisan walks past a huge sacred oak because its wood is good for nothing: a boat would sink, a coffin rot, a door sweat. That is exactly why it has grown so old, while fruit trees are stripped and broken for what they give. Zhuangzi does not make this a simple rule: when a host kills the goose that cannot cackle, he says resting halfway between useful and useless still cannot escape trouble; only riding on the Tao would.
Cook Ding carves an ox so smoothly it moves like a dance. He explains that at first he saw whole oxen; after three years he no longer did, and now he follows the animal's natural gaps instead of hacking through bone, so one blade has lasted 19 years. Effortless is not careless: at a hard spot he slows and takes care. His lord says he has learned from this how to care for his life.
Ren is the Analects' name for its central virtue, rendered benevolence, Goodness, or in Legge "perfect virtue." Before Confucius it meant the fine bearing of an aristocrat; in the Analects it becomes an excellence anyone can reach. Confucius's answers vary with the student: caring for people (12.22), or restraining yourself and returning to ritual (12.1). It can mean one virtue or all of them together.
Li, ritual propriety, runs from ancestral rites and funerals to courtesy in the family and the village and protocol at court; Confucians drew no line between manners and civic conduct. Confucius wants it filled with feeling: "Are gems and silk all that is meant by propriety?" (17.11). Interpreters split over whether ritual is a means of cultivating and expressing a goodness already there (3.3) or what that goodness consists in (12.1).
Asked for one word to live by, Confucius names reciprocity and puts it negatively: "What you do not want done to yourself, do not do to others" (15.23 in Legge; 15.24 elsewhere). In 12.2 the same rule describes ren and is linked to shu, sympathetic understanding, which means putting yourself in another's place. Some scholars think these lines were added later.
Originally junzi meant a prince's son; the Analects turns it into a name for ethical nobility, a path open to anyone willing to work at it. Legge renders it "superior man" and sets him against the "mean man": one's mind is on righteousness, the other's on gain (4.16). Other translators say gentleman, and Ames and Rosemont proposed exemplary person. Its marks include filiality, ritual and good judgment.
Filial piety and respect for elder brothers are together called the root of benevolence in Analects 1.2, though the speaker there is the disciple You Ruo, not Confucius. Confucius warns that mere support is not enough, since dogs and horses also get it, or in Legge's reading give it; without reverence there is no difference (2.7). Serve parents by ritual while they live, and bury and sacrifice to them by ritual after death (2.5).
Asked what he would do first in governing the state of Wei, Confucius says, "What is necessary is to rectify names" (13.3). His chain: if names are not correct, speech does not fit the facts, affairs fail, ritual and music decay, punishments go astray, and people do not know how to act. In 12.11 government exists when the ruler is a ruler and the father a father, each living up to the name.
Analects 2.15 pairs two habits that fail alone. In Legge: "Learning without thought is labour lost; thought without learning is perilous." Learning means studying the classics and following ritual; thought means reflecting. Confucius admits he once spent a day and night only thinking, to no use (15.30). Later Confucians split the stress, Xunzi on study and ritual, Mencius on reflection.
Mencius holds that everyone has four sprouts, feelings that can grow into virtues: compassion into benevolence, disdain into righteousness, respect into propriety, and approval and disapproval into wisdom. His proof: picture a child about to tumble into a well. Anyone would feel alarm, and not to win favor or fame. A sprout is not yet a virtue; you must extend it, as a king who spared an ox should spare his people.
Ox Mountain was once covered in fine trees. Axes cut them down, and when new shoots came up, cattle and sheep grazed them away, so the slopes are bare and people assume trees never grew there. A person whose good feelings are hacked at daily ends up the same way, yet that bareness is not their nature. Mencius's lesson: anything nourished grows, and anything starved withers.
Xunzi answers Mencius in a chapter titled "Human Nature Is Evil," though his word e is closer to detestable or bad than to evil in a theological sense. By nature he means the capacities and desires we are born with: followed unchecked, love of profit breeds strife. Goodness comes from wei, deliberate artifice, above all the sage kings' rituals and a teacher's methods, which transform nature rather than discard it.
Mencius complained that the teachings of Mozi and Yang Zhu filled the world. Mozi urged impartial care, jian ai: treat your friends' parents as your own, since partiality breeds war; he also judged lavish funerals and music wasteful. Yang Zhu, as Mencius portrays him, put self-preservation first, and no text of his survives. Mencius placed Confucian graded care as the mean between the two.
Confucians build character through ritual and study, likening it to cutting bone and polishing jade. The Laozi treats that effort as a symptom: benevolence and righteousness came into vogue only after the great Tao was abandoned (ch. 18), and deliberate moral striving deepens the loss. Its remedy is a return to ziran, naturalness, literally being so of itself. Yet both sides prize te, virtue; they differ over how it is gained.
H. Indian philosophy beyond Buddhism
The Bhagavad Gita, a poem set inside the epic Mahabharata, is a dialogue held in a war chariot halted between two armies. Prince Arjuna sees grandfathers, uncles, cousins and honored elders among his foes, drops his bow and refuses to fight. His charioteer Krishna, whom the poem presents as the Supreme Deity in disguise, answers him. Its date is uncertain: older estimates run from before the Christian era to the third century CE.
Krishna's central counsel to Arjuna is to act without craving the results: let right deeds, not their fruit, be your motive, and stay even-minded whether the work succeeds or fails. This is not a call to withdraw from action. The Gita says no one in a body can stand wholly apart from acting, and that dropping a duty you are bound to do springs from delusion.
Dharma has several senses, among them teaching and duty, and Sanskrit separates sva-dharma, your own duty, from para-dharma, the duty of another. The Gita ties duty to station: Arjuna is a Kshatriya, of the warrior class, so Krishna tells him that shirking a lawful battle would be a sin. Better, it says, your own work done imperfectly than another's done excellently.
The Gita presents several yogas, or disciplines, and its chapter titles include three: karma yoga, the way of work; jnana yoga, of knowledge; and bhakti yoga, of devotion. It does not crown one for everyone. Krishna offers a ladder: if you cannot fix your mind on him, worship; if you cannot worship, work for him; if not even that, give up the fruits of your acts. Some readings count four methods.
The gunas are the three qualities of prakriti, nature: sattva, rajas and tamas, sometimes rendered reflection, activity and inertia, or in an older Gita translation soothfastness, passion and ignorance. The Gita says all three bind the embodied self: sattva to happiness and truth, rajas by craving and works, tamas to stupor and sloth. Even the brightest guna is a tie; freedom means passing beyond all three.
Atman, the self, is a central object of Upanishadic inquiry. In the Katha Upanishad a youth, Nachiketas, questions Death himself and learns that the Self is never born and never dies, and is not slain when the body is slain. Indian thinkers read this self in rival ways; the Gita weighs two: one pure consciousness identical with the essence of everything, or many distinct selves, one per person.
Brahman is the Upanishadic name for ultimate reality, identified with atman, the inner essence of each being. Advaita Vedanta, whose leading early voice is Shankara (eighth century CE), takes this strictly: the self is pure consciousness, numerically identical with brahman, which has no parts or attributes. Other schools keep the world real: Ramanuja makes souls and matter the body of God, while Madhva denies the world is a modification of God.
Tat tvam asi, "you are that," comes from the Chandogya Upanishad (6.8.7) and became one of Advaita Vedanta's great sentences. Shankara reads it as a strict identity: the pure consciousness that is you is the same existence that grounds every object. Not every school agreed. The dualist Madhva divided the words differently so that the phrase says "you are not that."
Neti neti, "not so, not so," is a phrase from the Brihadaranyaka Upanishad that Shankara uses as a method: strip away every quality you might attribute to brahman, including body, senses and mind, because any positive predicate would shrink it to a finite thing. It is not nihilism. The negations deny only the forms laid over brahman, never brahman itself.
Maya is Advaita's word for the world's odd status: an objective, shared appearance, akin to a magic trick, that is less than real, yet not nonexistent like a hare's horn or contradictory like a square circle. Rivals labeled Shankara one who calls the world illusory. That is not exactly wrong but misses his aim: he uses the word rarely, stresses moral virtue, and treats the world as the means to discover brahman.
Samsara is the cycle of rebirth. In the Upanishads and among the wandering ascetics of the Buddha's era, many held that beings are reborn as humans, animals, gods or hell-dwellers; that karma governs rebirth, good acts bringing pleasant fruit and evil ones unpleasant; and that endless rebirth is unsatisfactory. Moksha, liberation, is release from the cycle, which they held is won by ending ignorance of one's true identity.
Indian thought sorted schools into astika, orthodox, and nastika, those that do not rest on the Vedas' authority: the Buddhists, Jains and Carvakas. The six orthodox darsanas are Samkhya and Yoga, which share a dualist picture of soul and nature; Mimamsa, rules for interpreting Vedic ritual texts; Vedanta, on the Upanishads; Nyaya, which stresses logic; and Vaisesika, on metaphysics and physics.
Samkhya divides reality into purusha, pure consciousness that does nothing and only witnesses, and prakriti, primordial matter made of the three gunas. Unlike Descartes's dualism, it puts thought and feeling on the matter side: intellect and emotion are subtle forms of prakriti. Liberation comes from discerning that consciousness is distinct from all of it. Samkhya, unlike Yoga, admits no Isvara, or God.
Nyaya, the orthodox school devoted to logic and debate, accepts four pramanas, or sources of knowledge: perception, inference, analogy and testimony. The stock Indian inference reasons from smoke seen on a mountain to fire there. Its root text, the Nyaya-sutra, gives the argument five parts: thesis, reason, example, application to the case at hand, and the conclusion restated.
Vedanta, "end of the Veda," interprets the Upanishads, and its schools divide over how the self relates to brahman. Shankara's Advaita says they are identical and the world is appearance. Ramanuja's Visistadvaita, qualified non-duality, keeps souls and matter real as the body of God. Madhva's Dvaita, duality, denies outright that the soul is one with God and keeps them eternally distinct.
Jain ethics centers on ahimsa, non-harming, grounded in the belief that every living being houses a self. Its reach is extreme. Jain thought counts earth-beings, water-beings and plants as living, and harm includes acts done through others or merely allowed, whether bodily, verbal or mental. Since even breathing or walking can harm, ideal restraint comes close to not acting at all. Filtering drinking water is one practice of this non-harming.
Anekantavada, the Jain doctrine of many-sidedness, holds that a real thing has many aspects: a clay pot already exists as clay yet did not exist as that shape. So a claim is true only in some respect, and Jain logic sets out seven modes of predication, from "it exists" to "it exists, does not exist, and is inexpressible." Jains are realists: claims vary by perspective because the object itself has many sides.
Carvaka, also called Lokayata, was India's materialist school: consciousness emerges from a combination of earth, water, fire and air, and the self is simply the conscious body. With no soul there is no afterlife and no rebirth. It accepted perception as the only source of knowledge, doubting inference. Little of its own sutras survives beyond a few quotations and short accounts in later works.
The Kural, a celebrated Tamil collection of didactic verses credited to the poet Tiruvalluvar, was placed by Eliot's 1921 history around the second century CE. He judged it ethical rather than religious: outside its first chapter it barely mentions a deity, it ignores Brahmanic philosophy and ritual, and it rates the householder's life above the ascetic's.
In Patanjali's Yoga Sutras, yoga means the restraint, partial or full, of the states and processes of the mind (citta-vrtti-nirodha). Posture is only one of its eight means, which run from ethical restraints such as non-injury and truthfulness, through breath control and withdrawing the senses from outer things, to stages of meditation. The goal, in Samkhya terms, is to see pure consciousness as distinct from mind and matter.
I. Scholarship, transmission, and reception
Epictetus taught by talking, and the Discourses survive because his student Arrian wrote them up; their preface says the aim was to convey the force of his teaching. Only four of at least eight books remain. The voice is usually taken as Epictetus's, since the plain everyday Greek differs from Arrian's polished style elsewhere, though a few argue Epictetus wrote them himself.
Diogenes Laertius credits Chrysippus with more than 705 books, and he was widely regarded as the school's leading theorist. No complete work by him, or by Zeno or Cleanthes before him, has come down to us. His views, like the early Stoa's generally, are rebuilt from quotations and reports, many by hostile critics such as Plutarch, Galen and Sextus Empiricus, plus damaged rolls of at least two of his books found at Herculaneum.
Von Arnim's three-volume Stoicorum Veterum Fragmenta was the first collection to gather the early Stoics' surviving quotations and reports in their original Greek and Latin. A reference like SVF I.345 means volume one, text 345. Entries include testimonia, later reports of what a Stoic held, not the Stoic's own words. Long and Sedley's 1987 The Hellenistic Philosophers gives English translations of many key texts.
Writing in the early third century CE, Diogenes Laertius produced ten books blending philosophers' lives with summaries of their schools' doctrines. Book 7 is a main source for early Stoic teaching, and Book 10 preserves three letters of Epicurus and the Principal Doctrines. He also repeats anecdotes, even slanders spread by Epicurus's opponents that he himself rejects, so weigh each report rather than trusting him wholesale.
Arius Didymus wrote abstracts of what the philosophical schools taught, and his account of Stoic and Peripatetic ethics survives inside the fifth-century anthology of Stobaeus. Modern accounts of Stoic ethics still draw on it, for instance for Antipater's formula of the goal: to keep selecting what accords with nature and rejecting what does not. Even his date is unsettled, placed anywhere from Augustus's court to the late first century CE.
Doxography, a modern label going back to Hermann Diels in 1879 and roughly meaning "tenet-writing", covers works that report what philosophers held rather than arguing a view. With quotations, such reports partly offset the loss of most ancient philosophy. Yet the compiler Aetius, checked against surviving authors like Plato or Aristotle, proves to adapt and distort, so assume the same for lost thinkers and ask who compiled each report, and why.
Most Greek philosophical texts survive through medieval manuscripts, at best from the ninth or tenth century, themselves the end of many rounds of copying. Survival could be narrow: Lucretius's poem rests on two ninth-century manuscripts and was out of circulation until Poggio Bracciolini rediscovered it in 1417. Even titles can mislead: the main manuscript of Seneca calls ten of his essays "dialogues", a somewhat misleading label.
In 1752 and 1754 excavators at a villa in Herculaneum found perhaps 800 papyrus rolls, carbonized, and so preserved, when Vesuvius erupted in 79 CE. Scholars hoped for lost Livy or Aeschylus; instead the library proved mostly Epicurean, with Philodemus the best-represented author and Epicurus next, including parts of his On Nature. The rolls are so fragile that early unrolling destroyed some, and much is still unreadable.
Cicero set out to bring the best of Greek philosophy to Roman readers, and his dialogues summarize Stoic, Epicurean and Academic views in Latin, often telling you which Greek term each Latin word renders. That makes him an indispensable witness to these schools. But he followed the skeptical New Academy and criticized the views he reported, and he is now read as a thinker in his own right, not only as a conduit.
All four come from Cicero's final burst of writing, after his daughter Tullia died and amid Caesar's dictatorship and murder. On Duties treats practical conduct and follows a treatise by the Stoic Panaetius; the Tusculan Disputations take up the emotions. On Old Age gives the case to Cato, in his eighty-fourth year, and On Friendship to Laelius, just after losing his friend Scipio.
Seneca wrote the 124 surviving Moral Letters to Lucilius in retirement, about 62 to 65 CE, before Nero ordered his death. They start from Lucilius's situation, real or presumed, and move among general points, cases, arguments and consolation, not a step-by-step proof. The aim is participation: you must think a doctrine through and make it your own. The letters address the proficiens, a person still making progress, not a finished sage.
Seneca's moral essays are labeled "dialogues" in their main manuscript, though each is a treatise written to one person. On Providence answers Lucilius on why good people suffer misfortune. On Anger, in three books, is for Novatus. On Peace of Mind opens with Serenus describing his own unsettled state. On the Shortness of Life tells Paulinus that life is long enough; people shorten it by wasting it.
For Epictetus, prohairesis, the capacity for choice, is by nature unhindered, so freedom cannot be taken from anyone, and that faculty is the true self. If things do not please you, he says, "the door is open", an exit tied in context to death; if you stay, do not complain. His training has three topics: desire and aversion, the impulse to act, and assent. Some scholars equate these with physics, ethics and logic; others reject the match.
Plutarch of Chaeronea (about 45 to 120 CE) wrote his Parallel Lives in Greek and Roman pairs, saying he meant to improve readers by giving them virtuous deeds to emulate. In his words, "my design is not to write histories, but lives": a jest can reveal character better than a battle. The name Moralia comes from a medieval collection of eleven ethical works, and it misleadingly implies his essays are mainly about ethics.
Boethius, translator of Aristotle's logic into Latin, rose high under the Ostrogoth king Theoderic, was accused of treason and magic, and was executed, probably in 526. In prison he wrote the Consolation, prose mixed with verse, where Philosophy reminds him that Fortune's wheel must turn and argues his fall has not cost him true happiness. Oddly for a Christian facing death, it never names Christianity, a puzzle readers still weigh.
Around 301 CE Porphyry arranged his teacher Plotinus's writings into the Enneads, six sets of nine treatises, prefaced by his Life of Plotinus, the best source on the man. Iamblichus later faulted his doubts about theurgy, "godlike action": rites such as prayer and sacrifice in which the soul works with the gods. Porphyry seems to have thought rites worked only within nature; Iamblichus held the soul too weak to rise by thought alone.
Proclus (412-485 CE) headed the Platonic school in Athens for almost fifty years and wrote commentaries on Plato, Aristotle and Euclid; his Elements of Theology derives reality from the One in numbered propositions. Whether he was original or chiefly a systematizer of his school's doctrines is unsettled. Medieval readers mostly met him in disguise: in the Book of Causes, credited to Aristotle, and in a writer posing as Saint Paul's disciple.
Philo, a Jewish thinker of first-century Alexandria, read scripture in the Greek Septuagint and adapted Greek methods of allegory; whether he counts as a philosopher is still debated. Eve made from Adam's rib is improbable taken literally, he says; the ribs stand for powers of the mind. Still, he faulted readers who dropped the literal sense, so he was not merely an allegorist. Ignored by Jewish readers, his works were preserved by Christians.
Syriac-speaking Christian scholars translated Aristotle's logic before Islam arose, and a later movement of translation into Arabic gave thinkers from al-Kindi to Ibn Rushd (Averroes) Aristotle, Plotinus and Proclus. Labels slipped: the so-called Theology of Aristotle was reworked Plotinus. Latin Europe knew Ibn Rushd simply as "the Commentator", and work framed by that label can miss how original a philosopher he was.
In 1417 the papal secretary Poggio Bracciolini rediscovered Lucretius's Epicurean poem, and Diogenes Laertius's Lives soon reached Italy and was put into Latin, letting readers study Epicurean ideas firsthand. In Florence, Marsilio Ficino's Latin translation of Plato was printed in 1484, followed by the first complete Latin Plotinus. Poliziano put the Enchiridion into Latin, and Seneca's works helped revive Stoic ideas.
Pierre Hadot held that for ancient thinkers philosophy was a way of life, and he found "spiritual exercises" in Roman Stoic writing: deliberate practices for examining and reshaping your own thinking. He read Marcus Aurelius's Meditations, likely written for Marcus's own improvement, through Epictetus's three disciplines. Others build on him while disputing details, such as his matching of Epictetus's three topics to physics, ethics and logic.
The founders drew the link themselves. Ellis, creator of rational emotive behavior therapy, credited Epictetus's line "Men are disturbed not by things, but by the views which they take of things," and Beck's 1979 depression manual traced cognitive therapy's philosophical origins to the Stoics. Their history is loose on detail: Ellis placed the Enchiridion in the first century, though Arrian wrote it down in the first half of the second.
The orthodox Stoics held that logic, physics and ethics form one system and that mastering all three is needed to live well. Seneca, Epictetus and Marcus Aurelius, the authors many readers meet, already lean toward ethics, and even Epictetus grounds his in theology: human minds are fragments of Zeus's mind. Whether Stoic ethics can stand apart from its physics is a live scholarly dispute, so a revival that keeps only the ethics takes a side.
Stoic apatheia means freedom from passions, impulses that are excessive and defy reason; read as feeling nothing at all, it turns the sage into a cartoon robot, though the sage has good feelings (eupatheiai). Epictetus's prohairesis, the capacity for choice, is variously translated, sometimes as "volition". Katalepsis appears as "cognition", "grasp" or "apprehension". When a rendering seems odd, find the Greek behind it.
A saying under a famous name is a claim to check. Schweighaeuser's edition gathered 181 fragments attributed to Epictetus, and the translator Hastings Crossley judged only a few certainly genuine, some looking Pythagorean. Most come from Stobaeus's anthology, not from the surviving Discourses or the Enchiridion. Whole works drift too: some dialogues in the traditional collection of Plato are now judged spurious.
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