Art History curriculum

Paleolithic painters worked deep inside caves. At Altamira in Spain a whole ceiling is painted with bison, and painters often scratched an outline with flint before tracing it in black manganese. Fame brings its own danger: at Lascaux in France heavy tourism and later chemical treatments upset the cave's microbes, and black stains now threaten the art.

The so-called Venus figurines are small statuettes of the female form, carved from stone, ivory or bone or modeled in clay, most dated to about 23,000 to 25,000 years ago. Many stress the body and give little attention to head or feet. Their purpose is still contested: one reading makes them fertility or religious symbols, another links their bulk to food stress as ice sheets advanced.

Stonehenge was built and reshaped over some two thousand years from about 3000 BC. Its big sarsen stones came from about 25 km away, while smaller “bluestones” were brought from farther, some from quarries in west Wales; in 2024 the Altar Stone was traced to northeast Scotland, at least 750 km off. Its builders left no writing, so its purpose must be inferred from the stones.

A ziggurat was a temple raised on stepped stages of brick, and most survive only as shapeless mounds, since sun-dried brick cannot resist water. A cylinder seal was a small stone carved in reverse; pressed into soft clay or rolled across it, it left a tiny raised picture. Its owner wore it on a cord through a hole bored along its length.

Egyptian artists built a figure from its most telling views: the head in profile but with a full-face eye, the shoulders shown full face, and the legs in profile again. The aim was a clear outline on a flat surface, not a single moment of seeing. Rank shows as size, a habit shared with Mesopotamian reliefs, where the king usually towers over his subjects.

Egyptian wall scenes are stacked in horizontal bands. A higher band does not mean the action is farther away: each band stands for its own plane, placed above the next instead of set back in perspective, and the number of bands depends only on how much the artist had to show. Read the wall as a stack of strips, not as one deep view.

Egyptian artists fixed the human figure with a grid: squares of a set unit were drawn on the flat surface, and the body was laid out to those measurements. One nineteenth-century account counts nineteen units to a figure. Because the grid set the proportions in advance, figures made centuries apart can share the same build, so a figure's proportions alone are a weak guide to its date.

A mastaba tomb joined an offering chapel, a sealed statue room called the serdab, and a burial vault reached by a shaft. Statues walled into the serdab served as stone or wooden bodies for the dead person's double, so more statues meant more chances of survival. The royal pyramid kept the mastaba's leading features, with a temple for the cult beside it.

Under Akhenaten, official images gave the king a long, sloping skull; one recent study reads this as a deliberate choice that set the pharaoh apart from other humans, not a record of his body. Sculptors also took on crowds, festivals and palace scenes, some reliefs drawn in near-correct perspective. After his reign a political and religious reaction rolled the program back.

Early Greek standing statues kept a stiff, Egyptian-like formality: arms hung straight down and faces were placid and mask-like. The faint smile they wear is a convention of the period, not a mood; on the Aegina temple sculptures even dying warriors smile. Traces show such statues were once painted, with colored eyes, hair and lips and bright weapons.

In contrapposto the figure rests its weight on one leg and relaxes the other, knee bent, so the hips tilt and the body sways into a curved line. It reads as alive because it is a balance about to change. Compare a figure planted evenly on both feet, like Donatello's St. George, which reads as fixed and immovable instead.

Classical Greek sculptors sought the type inside the individual: they kept what is structural and lasting and purged a figure of passing accidents. Artists purified their works of passions, so that nothing distracts from idealized nature, which is why the style reads as restrained. Ancient writers paired the sculptor Polykleitos with Pheidias, and Polykleitos even wrote down a rule of proportion.

Polykleitos is said to have written a treatise, the Canon, that gave exact rules for the proportions of the body's parts. His Doryphoros, or spear-bearer, was probably called the canon too, because it was built to those rules and served as a model other artists could work from. The text is lost, so the rule is known only through later reports and copies.

A Doric column rises straight from the platform with no base, under a plain cushion-shaped capital. The Ionic is slenderer, stands on a molded base, and carries scrolls, or volutes, at its capital. The Corinthian began as an outgrowth of the Ionic and shared its entablature, so check the capital itself: a tall bell wrapped in rows of acanthus leaves.

The Parthenon's lines only look straight: platform and cornice curve slightly upward and the vertical faces lean, correcting illusions the builders had noticed. Its sculpture ran from statues in the pediments to metopes in high relief to a continuous frieze, cut deeper at the top where it was seen from far below. It later became a church, and Lord Elgin removed many sculptures in 1801–1802.

In black-figure, painters laid figures in black on the clay ground and scratched details through the black. Red-figure reversed the scheme: the background was painted black and the figures were left in the color of the clay, with inner lines added by brush. Many red-figure vases also show a faint preliminary sketch pressed into the clay while it was leather-hard.

Hellenistic sculptors favored large groups and strained, dramatic motives. In the Laocoon, a Rhodian work of the first century BC, pain shows in brows, half-closed eyes and swelling veins, and one scholar saw the stage's influence in its histrionic poses. The Nike, or Victory, of Samothrace stands on a ship's prow as if leading a fleet; its date and school are still disputed.

Roman portrait sculpture grew from the custom of making wax masks of the dead, worn by mourners in funeral processions, so exact likeness mattered more than beauty. Where Greek sculptors idealized a face, Roman ones kept the sitter as he looked. Imperial statues joined likeness to display: the Augustus found at Livia's villa is loaded with emblems of rank, each detail carrying meaning.

Romans replaced wooden ceilings with vaults of brick, concrete or masonry wherever they could, using the barrel vault, the groined vault and the dome. Walls were often two faces of cut stone or brick with a core of concrete, broken stone and cement dumped in layers. Once set, the cement bound the whole into one conglomerate, so the finished wall behaved as a single mass.

Hadrian's Pantheon sets a hemispherical dome 142 feet across on a round wall 20 feet thick. Its only light comes through a round opening 28 feet wide at the crown, the oculus. The dome was coffered in deep panels with gilt stucco ornament, and niches in the wall lighten its mass without weakening it. Unlike later Byzantine domes, it rises from a circular wall, not from arches over a square.

The Flavian amphitheater, the Colosseum, was elliptical, ringing an elliptical arena with continuous tiers of seats, and was completed in AD 82. Its outer wall stacks engaged columns of a different order on each of three stories, with pilasters on the fourth. The half-columns sit between arches and mark the floors; travertine, concrete and tufa carry the building.

Scholars sort the walls of Pompeii into styles. The first imitated a veneer of colored marble in raised stucco. The second painted the marble in flat color instead and added painted architecture, opening the wall into illusory space; the fourth filled upper walls with airy, fantastic architecture on a light ground. Raised blocks point to the first style, painted columns to the second.

Mosaic builds a picture from small cubes called tesserae; Pompeian floors used coarse cubes under half an inch square and finer ones for pictures. Glass tesserae let walls shine, and gold ones were made with gold leaf sealed under glass. In Hagia Sophia, tesserae high on the walls were set in spaced, projecting rows, saving material and catching more light from below.

Relief figures project from a background: low relief barely rises, high relief stands far out. Depth can be adjusted for the viewer, as on the Parthenon frieze, carved deeper at the top where it was seen from far below, though nearly contemporary friezes in similar places were cut in high relief throughout. Roman relief bands could wind up a column to tell one long, continuous story.

The first Christian paintings looked like Roman pictures of their day; only the subject, such as Daniel, Jonah or the Good Shepherd, marks them as Christian. Even that shepherd borrowed pagan types: the ram-bearing Mercury and Pan with his pipes. Once Christianity was free to build, it took over the Roman basilica and its columns, marble and vine ornament for its own use.

Catacomb painters packed belief into signs. The fish stood for Christ because the Greek word for fish, ichthys, spells the initials of “Jesus Christ, Son of God, Savior”; the anchor, the dove and the lyre of a divine Orpheus carried meaning too. The cross itself is rare and usually disguised, so do not expect it as the main Christian sign in this early art.

The Roman basilica was a hall for courts and trade: a wide, lofty nave between lower side aisles, ending in an apse where magistrates sat, and lit by clerestory windows set above the aisle roofs. Christian builders adopted the type nearly whole for worship, keeping nave, aisles and apse, so the shape of a church first came from a courtroom, not a temple.

Byzantine mosaics set figures against a field of gold with little perspective, so saints seem to hang in a shining space rather than stand in a place, and groups stack upward instead of receding. The gold tesserae were glass with gold leaf sealed inside, and at Parenzo some were set at an angle to the wall to catch more light.

Hagia Sophia, dedicated in 537, rests its dome on four great arches around a square. The curved triangles between the arches, called pendentives, turn the square into a circle where the dome begins, and forty windows ring its base in a crown of light. Roman domes like the Pantheon's sat on round walls; the pendentive solved a different problem.

Ravenna's mosaics are the best-preserved early Christian series, spared much of the damage and restoration Rome suffered. In San Vitale, built between 526 and 547, Justinian and his empress appear on the lower walls in rich costume, each with a train of attendants. Justinian never visited Ravenna; he is shown as the church's donor because of his gifts, his presence made by image.

An icon follows church tradition, not the painter's invention. At the Second Council of Nicaea one defender of images said the holy fathers invent and dictate the composition and the painter only executes it. That is why icons repeat established types: sameness across centuries is the rule being kept, not a lack of skill, so judge an icon by its type before its style.

Under an edict of Leo the Isaurian in the eighth century, the old church quarrel over images flared into the Iconoclastic controversy: some wanted pictures to teach scripture, others said they led to idolatry. A council at Constantinople in 754 called religious images blasphemous, and destruction went on until the emperor Theophilus died in 842. The movement was checked before it reached the mosaics of Ravenna and Rome.

A miniature in art history is not just a small picture but an illuminator's painting in a manuscript; the word comes from minium, a red pigment. Simple manuscripts had colored initials, often red, which gave us the word rubric. At their richest, pages carried paintings on gold or silver grounds, and many monks spent their whole lives on such work.

Irish and Northumbrian monks filled books such as the Book of Kells with knotted, interlaced lines of color, plaited in and out so finely the work rewards a microscope. Their spiral patterns copied the metalwork of Celtic goldsmiths, and the Irish books use little or no gold. Human figures are often bent into the pattern itself, so read them as ornament before anatomy.

Charlemagne, emperor from 800, set out to revive letters and the illuminator's art, and Alcuin of York, abbot at Tours, revised the Latin text of the Bible. One Tours Bible of that revised text sets classical figures before Roman-style architecture in fairly correct perspective, while its initials keep Northern interlace: a blend, not a pure copy.

Romanesque builders tried to give the basilica a fireproof stone vault. Round-arched vaults push outward along the walls, and their buttressing was mostly internal, so walls stayed thick, windows small and exteriors plain. Their problem, how to vault the church safely, was not fully solved until the Gothic period, which grew out of Romanesque experiments.

A tympanum is the flat field between a doorway's lintel and the arch above it. Medieval portals filled it with scriptural reliefs, and a favorite subject was the Last Judgment, with Michael weighing souls; his tall figure and hanging scale pans conveniently filled the space. Saints, apostles and angels crowded the jambs and arches around it, so the whole portal taught as you entered.

The pointed arch does not make a building Gothic; the system does. Vault thrust is gathered onto isolated piers and met by counter-thrust, carried by flying half-arches to buttresses outside. Ribs went up first and guided the thin vault surfaces, and pointed ribs let arches of different spans rise to the same height. Flying buttresses joined such vaults after about 1150.

Once a Gothic building's weight stood on piers and buttresses, the wall between them became mere filling and could almost disappear. In the Sainte-Chapelle in Paris, built in the 1240s, vaults spring from slender shafts against deep buttresses, and the spaces between are filled entirely by windows of stone tracery and stained glass. The light is a product of the engineering.

Early windows are mosaics of pot-metal glass, colored in the making rather than painted on, cut to shape and held in grooved strips of lead soldered at the joints. Painters added faces and folds in paint fired onto the glass. Later enamel painting let one clear pane carry several colors without lead lines between them, a different look from the early jewel-like mosaic.

Rose windows were used early in Gothic west fronts and transept ends, often filling most of the wall beneath the vault. In the thirteenth and fourteenth centuries they grew vast and light in tracery, often filling a whole transept end. Their wheel-like tracery gave a whole phase of French Gothic its name, Rayonnant.

Courtly painting around 1400 favored splendor and pageantry. Gentile da Fabriano's Adoration of the Magi, signed in May 1423 for Palla Strozzi's chapel in Florence, turns the Magi's journey into a street procession of men-at-arms, horses and hunting animals inside a fantastic Gothic frame, in scarlet, crimson, azure and gold. Gentile also worked in Venice, carrying the manner between cities.

One historian located Giotto's breakthrough in mass more than perspective: if the eye believes a figure is solid, the mind supplies the space around it. In the Arena Chapel in Padua, dedicated in 1305 and paid for by Enrico Scrovegni, whose father was a notorious usurer, he painted the side walls in three rows of scenes, read from the top down, from the Virgin's childhood to Christ's Passion.

These terms count hinged panels. The format began small: late Roman consuls gave folding ivory tablets, diptychs, as official gifts, one dated as early as 406. Christian devotional triptychs in ivory usually set the Virgin and Child in the center with Passion scenes on the side wings, and sets of five hinged leaves came after the triptychs.

Most medieval art was commissioned work. Builders and carvers, one early-1900s writer noted, were hired as casually as plasterers, and their work all counted as “building,” so few makers' names survive. Patrons ranged from kings such as Louis IX, who took a close interest in his sculptors, to rich citizens like the Paduan Enrico Scrovegni.

Humanists set out to recover ancient texts and to educate society's elites through them. In Florence, Cosimo de' Medici gave Marsilio Ficino a house at Careggi in 1463, where Ficino worked on Plato. Ficino later called Cosimo the genius behind a “Platonic Academy,” but surviving sources do not show a formal school with regular meetings, so picture a circle, not an institution.

Linear perspective builds a picture from a ground plan and an elevation joined by intersecting lines, so receding forms shrink in measured proportion from a fixed eye level. Vasari credits Brunelleschi with finding the method and shows it in his drawing of the square before Florence's Baptistery. Before such rules, Vasari says, making figures recede had been left to chance.

When Florence debated how to vault its cathedral, Brunelleschi said the dome could rise without the usual timber framework, and, Vasari says, officials thought he talked like a fool. His plan used two vaults, one inside the other, rising together from a solid base. Vasari also credits him with finding a true method of perspective and teaching its rules to Masaccio.

For Vasari, Masaccio's advance was making figures stand firmly on the ground, feet foreshortened, instead of perching on tiptoe, and giving them natural relief with simple, lifelike drapery. Vasari says Brunelleschi had taught him rules of perspective, and that his Brancacci Chapel frescoes became a school where Leonardo, Michelangelo and Raphael all studied.

Donatello gave statues a presence of their own. Vasari says he swore by a bald-headed statue Florentines nicknamed Zuccone, and his St. George plants both feet evenly as if nothing could move him. His bronze General Gattamelata in Padua revived the equestrian monument on a colossal scale, the first since Roman times.

In the later 1470s Botticelli painted two pictures so different they hardly seem one artist's. The Adoration of the Magi is crowded with Medici portraits and built on light and shade. The Primavera, an allegory of spring painted for a Medici patron, turns to dreamlike invention. Read the two side by side and you see one painter working in a factual and a poetic manner at once.

Vasari explains why so much of Leonardo's work, like his Adoration of the Magi, was left unfinished: he imagined difficulties so subtle that no hand could carry them out. His notes on painting rest on looking hard, recording how smoke, dust and air change color with distance and light. Treat Vasari's explanation as an early interpretation, not a diagnosis.

Sfumato, Italian for “misty,” is the melting of one tone into the next with no visible line. Oil paint made it practical because the painter could blend pigments on the panel while they were wet. Leonardo prized almost imperceptible, well-blended shadows for the soft relief they give a face; a hard edge between light and dark is the sign that sfumato is absent.

Leonardo painted the Last Supper in the late 1490s on the end wall of a monastery refectory in Milan, not in true fresco but in tempera on a badly prepared ground, and it began to decay within a few years; within about sixty years it was reported half ruined. The picture catches the instant after “One of you shall betray me,” each apostle reacting by gesture.

The marble for David had been roughed out so clumsily by an earlier sculptor that no one dared carve it. Michelangelo took the block, added no pieces, and fitted the figure to it so tightly that, his early biographer Condivi says, the old outer surface still showed on the top of the head and the base. Condivi adds that he corrected the earlier faults as he carved.

The ceiling had to be painted in fresco on wet plaster overhead. Vasari tells how, after the Flood scene was finished, the surface grew moldy so that figures could hardly be made out, and the painter protested to the Pope that painting was not his art. One count finds some 394 figures, the seated prophets and sibyls far larger than life.

In the School of Athens Raphael set the philosophers inside an imagined vaulted basilica, drawing on the Basilica of Constantine and Bramante's plans for St. Peter's, with statues of Apollo and Minerva at the sides. Plato and Aristotle stand at the center of a foreshortened ring of figures. The fresco faces the Disputa, so secular thought answers theology across the room.

One historian gave the High Renaissance only about ten years, the span in which Rome rose as the center of art; Florentines, he noted, thought painting peaked in 1504 and 1505, when Leonardo and Michelangelo designed rival battle scenes. Its ideal was energy within serene harmony, and that balance is what later imitators lost.

Venetian painters used color with tact; it never seems an afterthought, as one critic found it in many Florentines. Damp Venetian air was hard on frescoes, so Venetians preferred oil on canvas, and Giorgione helped make the easel picture popular. Even Venetians felt the divide: Tintoretto is said to have wished for his own drawing joined to Jacopo Bassano's color.

Buon fresco is painted on the final coat of fresh, wet plaster with pigments mixed only in water, so each section must be finished in a day. It holds up well because water cannot penetrate it. Retouching later on the dry wall with egg, size or gum binders sits on the surface; Vasari warned such touches cloud and soon turn black.

Tempera binds pigment with egg and dries very fast, too fast to blend tints while wet, so painters modeled by laying tones over one another or by hatching. Oil stays workable, so colors can be fused on the panel for soft transitions, and it gives colors more brilliance. Vasari also praised oil for making figures seem to stand out in relief.

Vasari wrote that John of Bruges, Jan van Eyck, invented oil painting; his modern editor calls that a dogma, since Cennini already knew oil practice. What the van Eycks did was popularize new oil media in the 1400s. Adoption was slow in Italy: Mantegna and Botticelli were, as a rule, still tempera painters in their panel work.

Chiaroscuro models forms with light and shade so they seem to stand out. Leonardo noted that a figure under one directed light shows more relief than one under even, general light, and that air between eye and object weakens shadows and so flattens distant forms. He faulted painters who, loving pure color, skimp the shadows that give relief.

In the Arnolfini portrait of 1434, a round convex mirror on the back wall reflects the room and two more figures, and its carved frame holds ten tiny scenes of the Passion. Above it van Eyck signed “Johannes de eyck fuit hic,” Jan van Eyck was here. The wording can also be read as “this was Jan van Eyck,” which once led to wrong identifications.

In Netherlandish pictures, sacred meaning can sit inside household things: in van Eyck's Arnolfini portrait an amber rosary hangs on the wall, and the joined hands of the couple can be read as a sign of their union. How far each object is meant as a symbol is disputed, so ask whether a reading rests on the picture or on fancy.

Durer's first authenticated woodcut was a book illustration printed at Basel in 1492, but his famous woodcuts, the Apocalypse series among them, were made in Nuremberg after his first trip to Venice. Following the practice of the day, he drew each design in full detail on the block and had a professional cutter carve it, but he set those cutters harder tasks than ever before.

A woodcut prints in relief: the cutter keeps the drawn lines standing and cuts away the wood between them. Engraving cuts lines into metal with a burin, a square tool sharpened on the slant. Etching draws through a thin wax ground with a needle and lets acid bite the exposed lines, so the freer etched line comes from a different way of making the groove.

Bosch's devils and hybrid monsters stayed in demand long after his death. About 35 years later the print publisher Hieronymus Cock was selling grotesqueries in his manner, and Bruegel's print design Big and Little Fish of 1556 borrowed directly from Bosch. Temptations of St. Anthony by Bosch and his followers are crowded with fish-headed monsters.

Bruegel's early biographer Van Mander says he went to peasant fairs and weddings dressed as a peasant to watch them eat, drink and dance, and painted their manners and costume faithfully. Contemporaries called him Pieter the Droll for his Bosch-like drolleries. After his Alpine crossing, a joke ran, he swallowed the mountains and spat them out onto his panels.

Mannerism names the style that followed the High Renaissance masters of Florence and Rome. Older histories dismissed its painters as imitators who exaggerated Raphael, Michelangelo and Correggio. The label carries that verdict, so judge painters such as Bronzino by their own aims rather than as copies that fell short.

Born in Crete and trained in Venice and Rome, El Greco found his own manner only after settling in Toledo. He broke with Venetian color for a sober, subtle range of hues and a light and shade all his own, filling every part of his canvases. Contemporaries thought him bizarre, even mad, and his reputation rose only around 1900, when expression came to count over likeness.

Renaissance works were shaped by who paid. The cathedral's governing officials in Florence chose Brunelleschi's dome plan and owned the spoiled marble block that later became David. Palla Strozzi paid for Gentile's Adoration for his family chapel, and Pope Julius II kept pressing his painter to finish the Sistine ceiling faster than the artist wished.

The artist's standing rose sharply in the Renaissance. By the sixteenth century Vasari could call Michelangelo “divine” as a matter of course, and Leonardo argued that his study of appearance and reality led to knowledge of God. Painting had become a claim to intellect, not only skilled labor, unlike medieval building work, where makers' names were seldom kept.

Vasari's Lives, first printed in 1550 and expanded in 1568, built art history out of artists' biographies. Its charm is also its weakness: it is full of attractive personal legends, such as Giotto as a shepherd boy, and one later historian found Vasari never less accurate than on the early Florentine realists. His own theory introduction views painting through a Florentine frescoist's eyes.

Vasari treated women artists as marvels. He praised Sofonisba Anguissola of Cremona above any woman of his time and noted she lived at the Spanish court, so Italy held few of her works; he also wrote the life of the Bolognese sculptor Properzia de' Rossi. His praise, which wonders at hands “so tender and so white” braving marble, shows how women were cast as exceptions.

After the Protestant Reformation, the Catholic Church in Italy answered with the Counter-Reformation, and one of its chief means was richer decoration of worship, which created demand for large paintings. Baroque art matches this Catholic revival and its stress on extreme emotional states, yet Roger Fry doubted religion simply caused the style, since its roots run back to Michelangelo.

Roger Fry put the Baroque's essence as the greatest possible enlargement of the unit of design: a whole figure, or a whole facade, held in one sweep. Poses are emphatic and rhetorical, made less to feel an emotion than to show it to the onlooker. Drapery turns massive, its heavy folds running in a single diagonal from the top of the figure to the bottom.

Caravaggio aimed to make sacred scenes more truthful by taking his models from the street life around him, so his saints and apostles look like ordinary people from the street. He set them in masses of dark shadow, and his followers' constant black shadows earned them the name of the “Darklings.” The manner spread quickly; in Spain, Ribera took up its heavy shadows.

Tenebrism pushes chiaroscuro to an extreme: most of the canvas sinks into continuous black shadow, and light picks out only the key figures. Its source is Caravaggio's school, whose dark shadow masses became its trademark. Compare Leonardo's soft gradation, where shadows are almost imperceptible; in tenebrism the dark is the stage set.

Artemisia Gentileschi (1593–1654 or later) is the most celebrated woman artist of the Italian Baroque. Her Lucretia carries Caravaggio's manner: a physically real figure, caught at the climax of the story, emerging from darkness. Feminist critics since the 1970s have read her work against her own experience of rape; treat that as one interpretation, not the meaning of every picture.

Bernini carved transformations in progress: Daphne turning into leaves as Apollo reaches her, Proserpina twisting in Pluto's grip. His David is caught mid-action, the stone already in the sling. Hundreds of his sepia drawings and terra-cotta models survive, showing designs worked out first, so the frozen instant was planned, not improvised.

For the piazza of St. Peter's, Bernini designed curving colonnades and studied in drawings how they would look in perspective. One sheet lays a bearded crucified figure over the plan, its head at the dome and its arms along the colonnades. The historian Richard Norton took that sketch as proof Bernini meant the piazza to stand for Christ crucified, a reading drawn from one drawing.

Rubens ran an open studio. Pupils began a commissioned picture, and he stepped in once the outline was on the canvas, correcting it with a few strokes. A buyer content with his design and pupils' painting paid less than for his own hand. Van Dyck trained there, and specialists like Snyders painted the animals, so “by Rubens” often means a workshop product.

Rembrandt pushed chiaroscuro further than any painter before him. The critic Fromentin described his method as immersing everything, even the light, in a bath of shadow so that the light comes out more radiant. His late years were hard: in 1656 his creditors forced him into bankruptcy, and his house and goods were sold in 1657 and 1658.

Rembrandt's more than three hundred etchings are original works, not copies of his paintings: scarcely half a dozen share a subject with his pictures. He combined etching with drypoint, scratching lines straight into the copper and leaving the curl of metal, the burr, to hold ink in a rich, cloudy tone. The burr wears fast, so only a few early impressions show it.

Vermeer spent his whole life in Delft and left only a few dozen paintings now given to him with certainty. After his death he was forgotten, his pictures credited to other painters, until the French critic Thore, writing as W. Burger, revived him in the nineteenth century. He unified a picture's colors through diffused natural light rather than an imposed overall tone.

Seventeenth-century Dutch painting splits into specialties: portraiture, landscape, marine, genre and still life, though many painters worked in several. Buyers were mostly burghers, and, as one writer put it, they got an exact, largely unembellished picture of their country and habits. Each city had its market; at The Hague, Mierevelt sold portraits and Van Goyen landscapes.

Still life was a major Dutch specialty: catalogs list about a hundred painters of it, and Utrecht's school was known for flowers, dead game and birds. Painters arranged their objects deliberately; Dou reused one candlestick in many pictures. Whether a given still life carries a moral is a question to test, not assume: one early-1900s critic held that buyers simply loved the goods shown.

Las Meninas, painted about 1656, shows the Infanta Margarita with her maids of honor while Velazquez himself stands at his canvas, and a mirror on the back wall widens the scene. Court duties ate much of his time, yet his greatest late works came in his last decade. The story that the king knighted him for this picture is a fable.

Compare two palace facades. For Bramante, a facade was a stack of stories, each with its own pilasters and windows, each an equal unit of design. For a Baroque architect it was one great story with pilasters running the full height, divided into floors only as an afterthought. The same change, from balanced parts to one sweep, separates the two styles in figures.

Rococo painting under Louis XV turned to shepherds in silk, gods resting on clouds and lovers by artificial ponds. Such pictures did not claim to show real nature: they were made to ornament hall and boudoir, and their delicacy of design and color was the point. Later critics faulted their frivolity while granting that, as decoration, they have rarely been excelled.

The French Academy gave Watteau a new title, painter of fetes galantes: outdoor gatherings of elegant couples. One biographer traced them to Teniers' peasant revels, turned graceful and touched with gentle melancholy. Watteau set aside grand narrative for genre and skillfully laid color, and Fragonard later worked in a similar vein with freer brushwork.

Rococo was above all a decorative style, at its best in interiors. Paintings by Boucher and his circle were designed to ornament halls and boudoirs, their landscapes turned into embroidered backdrops with the effect of porcelain or tapestry. Later architectural critics, writing from classical taste, dismissed it as extravagance.

In France the shift shows in two reigns. One early historian called painting under Louis XIV a pompous imitation of foreign models, and painting under Louis XV more spontaneous and more French, made for private rooms. Fry saw the full Baroque as grand rhetoric; Rococo painting instead prized lightness of touch and charm of color for decoration.

Excavation fed the new taste. Digging at Herculaneum grew systematic after 1738, and work at Pompeii began on 30 March 1748 with twelve workmen. Winckelmann argued that beauty lay in form and was best shown by the ancient Greeks. Classicism also read as a protest: Boucher's art was linked with the Bourbon monarchy, while severe classical forms suggested a heroic republic.

Neoclassical painting modeled itself on Greek and Roman marbles, insisting on perfect form, correct drawing and balanced composition. Its subjects came from Greek and Roman history, and it rather despised color, light and shade, and natural settings. It kept official favor through the Revolution, Consulate and Empire, and its rules survived in academic art.

David made classicism the ruling style of French painting. He had studied the ancient marbles in Rome and used them as models, and the Revolution wanted pictures of heroes like Brutus. His art rested on rhythm of line, composed groups and heroic subject rather than color. After the Restoration he was sent into exile.

Ingres, David's pupil, held that in nature all is form and that painting is a development of sculpture; to compare Rembrandt with Raphael was, for him, blasphemy. He studied Raphael and brought the single figure back into art, as in The Source. His line and modeling made him a model of French draftsmanship.

Under Napoleon, Paris gained public buildings as Roman as their uses would allow. The Exchange, or Bourse, was wrapped in a Corinthian peristyle, and the river front of the legislature, the Palais Bourbon, got a twelve-column temple portico with a pediment. A temple front lent a working civic building ancient dignity, though one historian judged such shells ill-suited to modern uses.

The two camps disagreed about where beauty lives. Classicists put it in Greek form, as Ingres did with “in nature all is form”; Romantics put it in the painter's emotional nature. In the 1820s the quarrel turned bitter. Romantic painters slurred line for color, broke symmetrical groups into headlong action, and twisted skies and light to carry the feeling.

French Romantic painting took shape about 1822 as part of a wider “storm-and-stress” mood that reached literature first. It was subjective, a matter of feeling, and set itself against David's classicism. Romantics dropped classical themes for dramatic medieval and modern scenes, often drawn from Byron, Scott and Goethe. Gericault's Raft of the Medusa, shown in 1819, was an early break.

In Edmund Burke's Enquiry of 1757, the sublime and the beautiful rest on opposite foundations. Beauty excites love and tends to the small, smooth and bright; the sublime excites astonishment, an awe felt when danger threatens from a safe distance, and tends to the great, powerful and obscure. Burke and Kant both put nature ahead of art as its source.

Goya was a court painter, yet his print series on the French invasion of Spain in 1808, translated as The Misfortunes of War, records executions, fires, pillage and famine. As deafness that became complete set in, he withdrew to his country house, and there he painted his Saturn. His work spans late Old Master and early modern art.

Delacroix's palette started from Rubens and Veronese and grew richer after his journey to Morocco with Count Mornay's mission; Women of Algiers in Their Apartment came from that trip. Much of his work illustrates literature, from Dante and Virgil to Byron's Bride of Abydos and Goethe's Faust, and his work belongs to the Romantic preference for color over line.

In late works such as Rain, Steam and Speed, Turner broke surfaces into tiny touches of different colors and raised the whole key of his painting toward misty blue and gold, so solid forms dissolve into light and weather. Even Constable called one Turner canvas the most complete work of genius he had seen.

Caspar David Friedrich is the best-known German Romantic painter, active when landscape painting surged. In Romantic art nature often expresses inner spirituality, and Friedrich's landscapes show it: people appear, if at all, only as small observers, while the subject is the mystery and beauty of nature. One recent study suggests his view still shapes how people perceive nature.

From about 1825 something distinctly American appeared in the landscapes of Doughty and Thomas Cole. Cole, largely self-taught, was famed for Hudson River views and for allegorical series such as The Course of Empire. His pupil F. E. Church sought grand, startling mountain scenery, and Bierstadt and Moran painted the Rocky Mountains and other vast scenes.

Realism arrived around 1848, rejecting both classicism and Romanticism and taking nature as the only model and subject. It relied on direct observation and careful drawing, and it gave peasants the place that gods and goddesses had held in painting. For a public raised on mythology, a funeral of peasants painted as they were looked ugly, even blasphemous.

Courbet would not paint what he could not see; in one telling, asked for a goddess, he answered, “Show me one!” In A Burial at Ornans he gave a sacred theme to peasants' faces and shoes, cloudy skies and a hole in the brown earth. In 1855 he showed his work in a building he put up himself and declared himself realism itself. He carried his defiance into politics and died in exile.

Millet, born a peasant, lived and died at Barbizon and painted peasants with great simplicity and force. One early critic called him virtually the discoverer of the peasant as a subject for art; the same critic praised The Sower and The Gleaners and found the famous Angelus leaning on literary sentiment. His followers, that critic added, copied the subject but often missed its spirit.

Photography had several inventors at once: Niepce and Daguerre in France, who worked separately and then as partners, and Fox Talbot in England, whose calotype made pictures on paper. Niepce described his process in 1827 as heliography. As the camera took over exact likeness, painters looked elsewhere; one critic saw photography crowding the painter from their common field of sight.

Manet's Dejeuner sur l'Herbe set a nude woman beside clothed men, and that contrast, not the nude itself, gave offense; a nude alone or among nudes passed without comment. From then on he dropped academic chiaroscuro and spread light evenly, so color lies in broad, flat planes. Despite its outdoor setting the picture was conceived in the studio.

Impressionists treated an object's color as an effect of the light falling on it, not a fixed local color; a leaf is not simply green. They striped shadows with blue, rose and green instead of sooty brown. One early critic stressed that the painters worked a long time by instinct before anyone built a theory for them, so read the theory as description, not recipe.

Impressionist pictures rest on landscape and figure studies made in the open air, far from the studio, and only afterward brought together. Boudin's enthusiasm for working outdoors fed the movement, and the practice sharpened attention to light, color and movement. Manet's Dejeuner sur l'Herbe shows the older way: an outdoor scene painted in the studio, its landscape like a tapestry.

Monet became famous for series, from cathedrals and bridges to poplars and water lilies. To catch the right balance of light and dark he worked on several canvases at once, switching as the daylight changed. He said the subject did not matter to him; what he wanted was what exists between the subject and himself. His Giverny garden became a subject in its own right.

Degas joined the impressionists more in composition than in color. In one Opera pastel, seen from the orchestra, the neck of a double bass cuts up through the middle of the dancers, a view that caused scandal though anyone could see it any evening. In Absinthe a figure is cropped at the edge. He also softened pastels over steam and thinned oil paint with turpentine.

Renoir treated almost every subject, but figures sat at the center of his work. In his nudes he looked less at contour than at the brilliance of skin, the luminous, pearly substance of flesh, and his early manner descends from Boucher. As the critic Mauclair put it, his nude is not the academicians', built to a pseudo-Greek ideal.

Morisot and Cassatt both showed with the impressionists; Cassatt, the only American to do so, joined when the Salon's rigid rules had driven artists to independent shows. Morisot painted gardens, coast scenes and young women; Cassatt specialized in mothers and children. A 1900s critic still called Morisot's work “a woman's work” of unexpected strength.

The official Salon's jury decided what most of the public saw. Napoleon III allowed a Salon des Refuses where rejected painters could be seen, and Manet showed his Dejeuner sur l'Herbe there. In 1874 the impressionists held their own exhibition at Nadar's on the Boulevard des Capucines, and it caused an uproar. Both moves turned rejection into a rival venue.

Post-Impressionism is a label of convenience. Roger Fry, naming the painters in his exhibition in England, chose it as the vaguest, most noncommittal term, saying only that they came after impressionism. It therefore groups artists who answered impressionism very differently, such as Cezanne and Van Gogh, and it once also covered later painters like Matisse and Picasso.

Cezanne showed with the impressionists in 1874 but turned toward order; he said one must become classical again by way of nature. He studied Poussin's discreet rhythm and El Greco's single plastic theme running through every part of a design. A passing remark of his about geometric figures was later taken up as the basis of a new school.

In Paris Van Gogh took up Seurat's divided color, using pure colors mixed only with white and black. Later he stretched the dots into long, heavily loaded strokes that rush in different directions, outlined figures in broad lines, and set colors beside their complements. He worked fast, sometimes finishing a canvas in an hour.

Seurat tried to systematize the impressionists' optical discoveries with color theory, aiming to create the impression in the viewer's mind rather than on the canvas. He drew on the chemist Chevreul, who held that colors placed side by side look as unlike as possible. Signac, who carried the method on after Seurat died at 31, insisted the dot was only a technique.

Gauguin rejected the tamed landscapes of civilization and went looking for a nature and people he imagined as simpler, first at Pont-Aven, then in the South Seas. Early admirers praised his island pictures as dreams of a Utopian peace among simple, welcoming islanders, an outsider's fantasy laid over real people. Even that critic called him an image-maker more literary than painterly.

Art Nouveau broke down the barrier between the fine arts and the applied arts of ceramics, glass, furniture, textiles and metalwork. Whiplash curves and intertwined organic forms, some drawn from plants and microscope studies, ran from Lalique's jewelry to Tiffany's glass. Mucha's poster for Sarah Bernhardt made his name, though he rejected the movement's label as his own.

Rodin's early standing nude, The Age of Bronze, looked so alive that in 1877 he was accused of casting it from a living model. For Rilke, his real subject was the surface, made of countless small movements that each catch light differently. Rilke also defended the armless figures: nothing necessary is missing, he argued, just as people learned to accept trees cut off at the edge of impressionist canvases.

Monet was collecting Japanese pictures by the early 1870s. One early modern critic argued he took from prints such as Hokusai's Views of Fuji and Hiroshige's Tokaido the idea of painting one subject many times, though Monet kept his viewpoint fixed while the Japanese artists moved theirs. Toulouse-Lautrec took from the same source decorative arabesques and unconventional grouping.

Fauvism, the early-twentieth-century French movement, used potent color, often straight from the tube, for sensation rather than description, so a green patch need not be grass. Form no longer decides color. The subject usually stays traditional, a body or a piece of fruit; what marks a fauve canvas is strong, emotional, nonrealistic color laid over an ordinary subject.

Matisse trained in the academic tradition under Gustave Moreau, became a leader of the Fauves, and widened his range by studying Japanese prints, Persian ceramics and Arabic design. The critic Willard Wright wrote in 1915 that Matisse began the conscious process of making form arbitrary, bending it to expression. Read his flatness as a trained draftsman's choice, not a lack of skill.

Expressionist art bends color, line and form to carry feeling rather than to record appearance. Eddy's 1914 survey put the keynote of the modern movement as expressing the inner self, as distinguished from representing the outer world, and noted that the German expressionist Franz Marc used animal forms as arbitrarily as Matisse used nudes. The test is purpose: distortion chosen for feeling.

Munch turned his own illness and the early deaths of his mother and sister into subjects, beginning with the sickroom and the ravages of tuberculosis. Symbolism's stress on inner vision over observing nature suited him. He made fear and isolation felt without monsters or apparitions, through unnatural color, internal rhythm and undulating line, so read his distortion as emotion, not as faulty drawing.

German expressionism gathered in groups with different emphases. A 1914 survey counted Die Brucke, based in Dresden, among Germany's answers to the French Fauves. Der Blaue Reiter, founded by Franz Marc and Wassily Kandinsky, framed art in spiritual terms in a publication of the same name issued in Munich in 1912, where Marc complained that spiritual gains are valued so differently from material ones.

Kandinsky argued in Concerning the Spiritual in Art that color harmony must rest on a matching vibration in the soul, guided by the artist's inner need for spiritual expression, against what he called the nightmare of materialism. Music was his model, and he named works compositions, impressions and improvisations. Read his abstraction as a claim about spirit, not as mere pattern.

Cubism broke objects into faceted planes and showed space and volume from several viewpoints at once, so one image combines what no single glance could see. Traditional art had confined its subject to one time and place; cubism did not. It began as a formal style applied to traditional subjects, and a 1914 account says its name was first given in derision, in the autumn of 1908.

Analytic cubism, the earlier phase, was a harsh, intellectual style that took objects apart into geometric lines and contours, and it soon gave up color for a range of grays and browns. Synthetic cubism, the later form, was more representational and flat and used bright decorative patterns, as in Three Musicians of 1921. The quick test is muted facets against flat, colorful shapes.

Picasso's work is usually tracked through overlapping periods from 1901: first the blue and rose periods, poor people painted with melancholy and lyricism, then fragmented, distorted images that made him a founder of modern abstraction, then collages of paper cutouts, numbers and letters. Date a Picasso by period, since no single style holds across his long career.

Braque exhibited a picture in the new faceted manner in 1908, the autumn a 1914 account gives for the coining of the movement's name. His standing shows how much period criticism varies: in 1915 Willard Wright said he had added nothing and followed his partner closely, while Clive Bell later called him the best of the group. Treat such verdicts as opinions to test against the works and their dates.

Collage glues real material, such as cut paper, printed numbers and letters, onto the picture surface. In early twentieth-century painting it pushed the work further from representing reality, since a scrap of newsprint is itself and not a picture of something. Later artists such as Romare Bearden built whole compositions from papers, paint and photostatic enlargements, so the technique outlived its origins.

Futurism, the Italian movement founded by Marinetti, called on artists to discard traditional motifs and to draw on science, technology and modern city life. Its painters took the faceted geometry of cubism and aimed it at machines and movement. Boccioni's Elasticity fuses cubist style with futurist themes, a galloping horse and rider among electrical towers and factory chimneys.

In Russia the two split over purpose. Malevich's Suprematism sought pure abstraction, the artist freed from ideas and representation to follow pure sensibility. Constructivism, championed by Vladimir Tatlin, explored geometric form in two and three dimensions as a service to society, and in 1921 Liubov Popova and others left studio painting for textile, book and theater design.

De Stijl, also called neoplasticism, stripped painting down to what its theorists called the plastic, the formal structure underlying nature. Balance came from unequal but equivalent oppositions, so a composition is asymmetrical yet fixed: in that account no line or color could move without breaking it. Theosophy fed this search for a pure reality beneath appearances.

The Bauhaus, a German school of design, set out to break down the barrier between artists and craftspeople and to reintegrate the artist into a technological society. Students and teachers worked with industry to manufacture their designs, and painters such as Paul Klee taught there. It lasted only 14 years before falling foul of the Nazis, and many of its people emigrated.

Dada began in Zurich, in neutral Switzerland, in the middle of the First World War; Hans Arp recalled making collages and poems while guns rumbled in the distance, hoping to cure the madness of the age. It questioned the values of past art, and that questioning still drives arguments about what art is. Marcel Duchamp's mock version of a revered portrait is one example.

A readymade is an ordinary, unaltered object, such as a snow shovel or a bottle rack, selected and presented as an artwork, so choosing replaces making. Because such objects lack the traditional properties of artworks, they became hard cases that pushed philosophers to define art by something other than how it looks, and conceptual artists later continued the tradition.

Surrealism, headed by the poet Andre Breton, called for a revolution of the mind. It probed the unconscious, dreams, memories and psychological associations, trying to erase the barriers between dream and reality and between reason and madness, and it grew partly from disillusion after the First World War. Its images rest on paradox and contradiction, not on imitating the visible world.

Both made the impossible look matter-of-fact. Dali, an astonishing draftsman who had worked in a strictly academic style, painted a face drawn in the outline of familiar beach rocks in a bare, denuded landscape. Many Magritte pictures change one element of an ordinary scene, and his painted pipe captioned This is not a pipe asks whether you are seeing a pipe or only a picture of one.

In the 1920s and 1930s the Harlem Renaissance celebrated African cultural identity and heritage across the arts. Painters joined modern means to that aim: Hale Woodruff absorbed cubism in Paris and studied mural painting with Diego Rivera in Mexico, then painted murals at Talladega College tracing the college's growth from an abandoned Civil War prison. Read such work as modern form serving a recovered history.

Mexican muralism made painting a public address. Diego Rivera's murals mingled culture, history and folklore with social, political and communal themes, and they were made for public areas, not private galleries, to reach a broad public. That public reach drew the American painter Hale Woodruff to Mexico to study with him, while Kahlo's personal painting stood apart from the muralists.

Kahlo's art is bound to her life: childhood polio, a 1926 crash between a bus and a streetcar, and lifelong pain shaped it, and the work draws on Mexican folk motifs, especially the small votive pictures called retablos. Her pictures cannot be fully understood apart from that life, so read her symbols through her biography rather than through a movement label.

Abstract expressionism, or the New York School, grew after the Second World War and moved the center of the avant-garde from Europe to the United States. It valued the inner world over external objects and raised the act of painting itself to a means of expression. It has two faces: the gestural action painting of Pollock and the quieter fields of color of Rothko.

Pollock laid his canvas on the floor so he could walk around it and work from all four sides, and he traded easel, palette and brushes for sticks, trowels, knives and fluid paint. He believed the modern artist expresses feelings rather than illustrating. Trained under the regionalist Thomas Hart Benton, he reached this method only after trying several styles.

In Rothko's mature paintings two, sometimes one or three, soft-edged rectangles of color float over a colored ground, with no objects in them at all. Their scale is meant to envelop you, so that you feel inside the painting, and the work aims at a spiritual experience, most fully in the Rothko Chapel in Houston. A small reproduction removes the effect the size was built to give.

Pop art, a movement of the 1950s and 1960s, took mass-produced material from advertising, comic books and the mass media and turned it into icons for contemplation, product labels and all. Its mechanical techniques of reproduction set new boundaries for originality. Many of its artists added irony or parody, so ask of any pop work whether it mocks its source or simply presents it.

Warhol came to fine art from commercial illustration that already relied on photographs and existing images. He painted celebrities, dollar bills and supermarket products and, at his studio, the Factory, perfected two-layer silk-screen printing so one photographic image could be repeated. His Brillo boxes look like ordinary cartons, which led Arthur Danto to argue that what makes them art cannot be seen.

In conceptual art, which peaked roughly from 1966 to 1972, the idea is the work: Sol LeWitt called the concept its most important aspect, and the art is treated as dematerialized, prior to any object that carries it. That puts intellectual inquiry ahead of beauty. Judge a conceptual piece by the question it raises about art and its purpose, not by its craft.

Performance art makes the artist's own body and actions the material. Women artists of color such as Adrian Piper, who is also a philosopher, led explorations of identity and agency through it, and in the 1970s and 1980s Ana Mendieta used her own body to form silhouettes and shapes. Conceptual art had prepared the ground by treating a work as a process rather than a thing.

Land art, or environmental art, is not simply placed outdoors: large works such as Robert Smithson's Spiral Jetty and Michael Heizer's Double Negative include part of the environment as a constitutive element, so the site belongs to the work. That raises an ethical argument, with some philosophers calling such changes aesthetic affronts to nature and others defending more ethical forms.

Street art addresses people passing by, and not all of it is unsanctioned. At 5Pointz in Long Island City, New York, a warehouse owner invited aerosol artists and a curator ran the walls; some works lasted, others were painted over within days or weeks. After the owner whitewashed them, a federal appeals court held in 2020 that even temporary work can achieve recognized stature under the Visual Artists Rights Act.

Appropriation reuses existing images, and the disputes can be legal as well as critical. In 2023 the US Supreme Court held that the first fair-use factor did not favor the Warhol foundation's licensing of Orange Prince, a Warhol silkscreen made from Lynn Goldsmith's 1981 photograph, to a magazine: both were portraits for magazine stories, the use was commercial, and new meaning alone was not enough.

Feminist art history, from the early 1970s, argued that the institutions and concepts of fine art had excluded women from recognition, so the thin record of celebrated women reflects the rules of the canon, not talent. It also showed how domestic arts made mostly by women were dropped from art history proper. Activist groups such as the Guerrilla Girls pushed for visibility in the art world.

Ukiyo-e, images of the floating world, began with the transient life of a theater district and widened to nature and the common people. A print was a team product: the artist drew the design in outline, an engraver pasted it face down on a cherry block and cut away the wood to leave the lines in relief, then cut extra blocks for the colors, with corner marks to keep them in register.

Landscape became a leading print theme only after Hokusai's views of Mount Fuji, begun in his seventies, became popular; he folded Western design principles into his own tradition's technique. Hiroshige made thousands of views of his city and the provinces in every weather, by day and night, and in late works he borrowed a Western sense of depth, with a looming, close-up foreground framing the view.

In China, painting and calligraphy were practiced and theorized by scholars and high officials, the literati, from the first centuries of the common era; court and professional painters wrote almost nothing. The theory puts intention before execution, the heart seizing a movement before the hand echoes it, and values spiritual over formal resemblance, so an unfinished stroke can be deliberate.

Geometric and arabesque ornament and Arabic script run through Islamic decoration, and the script is often the most useful part. Stanley Lane-Poole noted in 1886 that Cairo inscriptions on pulpits, doors, bowls, lamps and trays usually name the patron and seldom the artist, and he used them to fix a sequence of styles. Figures appear too, as on a twelfth-century enamel of animal forms, so do not assume it is all abstract.

Modern artists drew directly on African carving; Modigliani, for one, was influenced by African carvings and masks in his early sculpture. The admiration often came as a formal reading. Roger Fry wrote in 1920 that pieces shown in London were great sculpture, conceiving form fully in three dimensions, yet he called their makers nameless and judged them by plastic design alone. Spot that frame when you read modernist praise.

Repatriation returns objects or human remains from museums and universities to their culture, nation or owner of origin. A clear theft makes the case simple; disputes arise when the justice of the acquisition is unclear, when the source group is unclear, or when keeping the object is thought to outweigh the claim. In the US, NAGPRA, a 1990 federal law, sets a process for returning certain Native American cultural items.

Formal analysis describes what you can see before asking what it means. Arthur Dow's 1914 Composition reduced the structure of the space arts to three elements: line, notan (the massing of dark and light) and color. He argued that good color depends on good notan, which in turn depends on good spacing, so begin with how the surface is divided and only then judge the color.

Composition is the arrangement of parts and the path it sets for the eye. Henry Poore's 1903 manual asked that the eye cross a picture's central division at least once, so the two sides balance; it called two or more exits a common error, since they split attention, and objected to a scene cut into equal halves, as by a tree trunk down the middle. Check balance, then the way out.

A focal point is the spot a design makes primary. Poore advised leading the eye there at once by holding back the other parts, so that however deep into the picture the eye travels, it arrives at the true goal of the design; anything along the way that pulls too hard confuses the sight and weakens the impression. Focus comes from subordination, not only from brightness.

Value is how light or dark a passage is. Arthur Dow separated notan, the designed massing of tones of different values, from light and shadow, which he called a single fact of external nature. Modeling is the second use: graded light and shade make forms look solid, and Vasari advised placing the dark tints where they are least conspicuous, to bring out the figures.

Brushwork, or handling, is the visible way paint was laid down, and it is evidence. Joshua Reynolds told students that close study of fine colorists reveals their manner of handling, contrast and glazing. Roger Fry praised El Greco for never blurring his expressive brushwork to fake texture. Today microprofilometry can even measure brushstrokes, including those of a painting hidden beneath another.

Size changes the encounter, and reproductions flatten that difference. Rothko's large canvases aim to envelop you, so you feel inside the painting, and Pollock's Autumn Rhythm runs more than five meters wide. Yet Hokusai's Great Wave, an image recognized worldwide, is a print about 26 by 38 centimeters. Check a work's dimensions before you judge the effect it was made to have.

Iconography identifies figures and objects through conventions that artists and their viewers once shared. The evangelists, for instance, appear in early art as four books, four rivers or four mysterious creatures. One sign can carry several meanings: the lion stood for Christ and for the resurrection, yet scholars still disagree about the lions in Lombard church porches, so test each reading against its setting.

Iconology is the last of Erwin Panofsky's three steps: first a pre-iconographical description of what is shown, then an iconographical analysis of the theme, then an interpretation of the work's intrinsic meaning. Iconography can tell you a figure is St. Catherine; iconology asks what the whole image says about its maker's worldview and the historical context that produced it.

Attributes are objects tied to a figure's story that let you name it: St. Laurence carries a gridiron, St. Catherine a wheel, and the Magdalene may hold a vase of ointment. A palm branch marks any martyr triumphant in death, so it narrows a figure to a class, while the personal object names the individual. Look-alike saints in similar habits, such as Francis, Anthony and Dominic, need closer reading.

Academies ranked kinds of painting by the ideas they demanded. Joshua Reynolds, president of London's new Royal Academy, said history painting ought really to be called poetical, because it shows a person through actions; he set the portrait painter lower, and still life, a minute record of humble objects, lower again. The ranking rated subjects and aims, not skill, and he granted each kind its merit.

Ask who paid for a work and where it was meant to be. In 1943 the dealer and patron Peggy Guggenheim commissioned a large mural from Jackson Pollock, and he tore down walls in his apartment to fit the canvas. Older religious pictures each held a dedicated place in a consecrated building; moved into a drawing room or gallery, they lose the function that shaped them.

Meaning depends on what the first viewers already knew. Painters of saints' legends could count on certain associations and sympathies in their spectators' minds. A modern viewer who has lost them meets a young figure holding a cross aloft with one foot on a defeated dragon and cannot say who it is. Recovering that shared knowledge is part of reading the picture.

Provenance is a work's ownership history. It can link an object to a maker or a famous collection, but it proves less than it seems: Nobili's 1922 study of faking describes a Louvre relief with a long, well-established pedigree that was cataloged as an Etruscan bronze and taken for antique until shortly before he wrote. Fakers also had helpers who lent invented pedigrees, so check the object as well as its papers.

Connoisseurship attributes a work by its style, through an expert's trained eye. Its limit is that this is situated judgment, hard to standardize or repeat, unlike tree-ring dating of a wooden support, so attribution studies now weigh it alongside imaging and material analysis. The stakes are real: Nelson Goodman called painting autographic, an art in which even an exact duplicate does not count as genuine.

Conservation weighs keeping a work's history against recovering its original state, and a central rule is to avoid irreversible interventions, keeping them minimal for the sake of future viewers. A fifteenth-century panel, the Lindau Crucifixion, shows the dilemma: its blue background proved to be a later overpaint on gold, and removing it would erase a layer of the work's life for good.

Technical analysis reads the hidden layers of a work as evidence. Most paint layers are transparent to near-infrared light, so infrared reflectography, used since the 1960s, can show lower layers and the artist's changes of plan. X-ray fluorescence identifies the pigments. Combined, such methods found a Leda and the Swan beneath the visible scene of a sixteenth-century painting.

Pigment identification is a traditional authentication test, and its power runs one way. Finding a pigment that is chronologically wrong for the claimed date can prove a work inauthentic, but finding period-correct materials cannot prove it genuine. Newer tools, such as hyperspectral imaging and machine learning trained on authentic and imitation paintings, add evidence without removing that asymmetry.

The support is what the paint sits on, and each has its logic. Fresco on a wall must be finished one day's portion at a time, because the surface forms a crust if left, and its colors change as it dries. Vasari explained canvas by its light weight and the ease of rolling it up for transport, and noted that it replaced wooden panels where those could not be made large enough.

Sculpture is made by taking away or by building up. Vasari defined it by subtraction: removing all that is superfluous from the material until the form designed in the artist's mind remains. Modeling builds up soft material such as wax, which he softened with animal fat and turpentine, and such models also lead to casting in bronze. A figure in the round is seen from every side, so each view must work.

Lost-wax casting is named for the step in which the wax model is lost. In Vasari's account, a skin of wax is laid over a core, wrapped in a fire-resisting envelope with vents, and melted out, leaving a gap for the molten bronze. The cast is then chased with burins and files, and pieces that failed to come out are grafted on; one ancient statue was cast in separate parts and welded.

Identify a print by how its lines were made. A woodcut prints from lines left standing in relief after the wood around them is cut away. An engraving prints from lines cut into a metal plate with the burin, a square tool sharpened on the slant. A lithograph is chemical printing on stone: a gum solution keeps the ink off the undrawn surface, so the image is drawn, not cut.