Niccola Pisano founded a school. His son Giovanni, and the numerous pupils employed upon the monuments just mentioned at Siena, Bologna, and Perugia, carried on the tradition of their master, and spread his style abroad through Italy. Giovanni Pisano, to whom we owe the Spina Chapel and the Campo Santo at Pisa, the façade of the Sienese Duomo, and the altar-shrine of S. Donato at Arezzo—four of the purest works of Gothic art in Italy—showed a very decided leaning to the vehement and mystic style of the Transalpine sculptors. We trace a dramatic intensity in Giovanni's work, not derived from his father, not caught from study of the antique, and curiously blended with the general characteristics of the Pisan school. In spite of the Gothic cusps introduced by Niccola into his pulpits, the spirit of his work remained classical. The young Hercules holding the lion's cub in his right hand upon his shoulder, while with his left he tames the raging lioness, has the true Italian instinct for a return to Latin style. The same sympathy with the past is observable in the self-restraint and comparative coldness of the bas-reliefs at Pisa. The Junonian attitude of Madonna, the senatorial dignity of Simeon, the ponderous folding of the drapery, and the massive carriage of the neck throughout, denote an effort to revivify an antique manner. What, therefore, Niccola effected for sculpture was a classical revival in the very depth of the Middle Ages. The case is different with his son Giovanni. Profiting by the labours of his father, and following in his footsteps, he carried the new art into another region, and brought a genius of more picturesque and forcible temper into play. The value of this new direction given to sculpture for the arts of Italy, especially for painting, cannot be exaggerated. Without Giovanni's intervention, the achievement of Niccola might possibly have been as unproductive of immediate results as the Tuscan Romanesque, that mediæval effort after the Renaissance, was in architecture.[[62]]
The Gothic element, so cautiously adopted by Niccola, is used with sympathy and freedom by his son, whose masterpiece, the pulpit of S. Andrea at Pistoja, might be selected as the supreme triumph of Italian Gothic sculpture. The superiority of that complex and consummate work of plastic art over the pulpit of the Pisan Baptistery, in all the most important qualities of style and composition, can scarcely be called in question. Its only serious fault is an exaggeration of the height of the pillars in proportion to the size of the hexagon they support. Like the pulpits of the Baptistery, of the Duomo of Pisa, and of the Duomo of Siena, it combines bas-reliefs and detached statues, carved capitals, and sculptured lions, in a maze of marvellous invention; but it has no rival in the architectonic effect of harmony, and the masterly feeling for balanced masses it displays. The five subjects chosen by Giovanni for his bas-reliefs are the "Nativity," the "Adoration of the Magi," the "Massacre of the Innocents," the "Crucifixion," and the "Last Judgment." In the "Nativity" our Lady is no longer the Roman matron of Niccola's conception, but a graceful mother, young in years, and bending with the weakness of childbirth. Her attitude, exquisite by the suggestion of tenderness and delicacy, is one that often reappears in the later work of the Pisan school—for example, in the rough abozzamento in the Campo Santo at Pisa, above the north door of the Duomo at Lucca, and at Orvieto on the façade of the cathedral; but it has nowhere else been treated with the same sense of beauty. The "Massacre of the Innocents," compared with this relief, is a tragedy beside an idyll. Here the whole force of Giovanni's eminently dramatic genius comes into full play. Not only has he treated the usual incidents of mothers struggling with soldiers and bewailing their dead darlings, but he has also introduced a motive, which might well have been used by subsequent artists in dealing with the same subjects. Herod is throned in one corner of the composition; before him stand a group of men and women, some imploring the tyrant for mercy, some defying him in impotent despair, and some invoking the curse of God upon his head. In the "Adoration of the Magi," again, Giovanni shows originality by the double action he has chosen to develop. On one side the kings are sleeping, while an angel comes to wake them, pointing out the star. On the other side they fall at the feet of the Madonna. It will be gathered even from these bare descriptions that Giovanni introduced a stir of life and movement, and felt his subjects with a poetic intensity, alien to the ideal of Græco-Roman sculpture. He effected a fusion between the grand style revived by Niccola and the romantic fervour of the modern imagination. It was in this way that the tradition handed down by him proved inestimably serviceable to the painters.
The bas-reliefs, however, by no means form the chief attraction of this pulpit. At each of its six angles stand saints, evangelists, and angels, whose symbolism it is not now so easy to decipher. The most beautiful groups are a company of angels blowing the judgment trumpets, and a winged youth standing above a winged lion and bull. These groups separate the several compartments of the bas-reliefs, and help to form the body of the pulpit. Beneath, on capital's of the supporting pillars, stand the Sibyls, each with her attendant genius, while prophets lean or crouch within the spandrils of the arches. Thus every portion of this master-work is crowded with figures—some detached, some executed in relief; and yet, amid so great a multitude, the eye is not confused; the total effect is nowhere dissipated. The whole seems governed by one constructive thought, projected as a perfect unity of composition.[[63]]
A later work of Giovanni Pisano was the pulpit executed for the cathedral of Pisa, now unfortunately broken up. An interesting fragment, one of the supporting columns of the octagon which formed the body of this structure, still exists in the museum of the Campo Santo. It is an allegorical statue of Pisa. The Ghibelline city is personified as a crowned woman, suckling children at her breast, and standing on a pedestal supported by the eagle of the Empire. She wears a girdle of rope seven times knotted, to betoken the rule of Pisa over seven subject islands. At the four corners of her throne stand the four human virtues, Prudence, Temperance, Justice, and Fortitude, distinguished less by beauty of shape than by determined energy of symbolism. Temperance is a naked woman, with hair twisted in the knots and curls of a Greek Aphrodite. Justice is old and wrinkled, clothed with massive drapery, and holding in her hand the scales. Throughout this group there is no attempt to realise forms pleasing to the eye; the sculptor has aimed at suggesting to the mind as many points of intellectual significance as possible. In spite of ugliness and hardness, the "Allegory of Pisa" commands respect by vigour of conception, and rivets attention by force of execution.
A more popular and pleasing monument by Giovanni Pisano is the tomb of Benedict XI. in the church of S. Domenico at Perugia. The Pope, whose life was so obnoxious to the ambition of Philip le Bel that his timely death aroused suspicion of poison, lies asleep upon his marble bier with hands crossed in an attitude of peaceful expectation.[[64]] At his head and feet stand angels drawing back the curtains that would else have shrouded this last slumber of a good man from the eyes of the living.[[65]] A contrast is thus established between the repose of the dead and the ever-watchful activity of celestial ministers. Sleep so guarded, the sculptor seeks to tell us, must have glorious waking; and when those hands unfold upon the Resurrection morning, the hushed sympathy of the attendant angels will break into smiles and singing, as they lead the just man to the Lord he served in life.
Whether Giovanni Pisano had any share in the sculpture on the façade of the cathedral at Orvieto, is not known for certain. Vasari asserts that Niccola and his pupils worked upon this series of bas-reliefs, setting forth the whole Biblical history and the cycle of Christian beliefs from the creation of the world to the last judgment. Yet we know that Niccola himself died at least twelve years before the foundation of the church in 1290; nor is there any proof that his immediate scholars were engaged upon the fabric. The Orvietan archives are singularly silent with regard to a monument of so large extent and vast importance, which must have taxed to the uttermost the resources of the ablest stone-carvers in Italy.[[66]] Meanwhile, what Vasari says is valuable only as a witness to the fame of Niccola Pisano. His manner, as continued and developed by his school, is unmistakable at Orvieto: but in the absence of direct information, we are left to conjecture the conditions under which this, the closing if not the crowning achievement of thirteenth-century sculpture, was produced.
When the great founder of Italian art visited Siena in 1266 for the completion of his pulpit in the Duomo, he found a guild of sculptors, or taglia-pietri, in that city, numbering some sixty members, and governed by a rector and three chamberlains. Instead of regarding Niccola with jealousy, these craftsmen only sought to learn his method. Accordingly it seems that a new impulse was given to sculpture in Siena; and famous workmen arose who combined this art with that of building. The chief of these was Lorenzo Maitani, who died in 1330, having designed and carried to completion the Duomo of Orvieto during his lifetime.[[67]] While engaged in this great undertaking, Maitani directed a body of architects, stone-carvers, bronze-founders, mosaists, and painters, gathered together into a guild from the chief cities of Tuscany. It cannot be proved that any of the Pisani, properly so called, were among their number. Lacking evidence to the contrary, we must give to Maitani, the master-spirit of the company, full credit for the sculpture carried out in obedience to his general plan. As the church of S. Francis at Assisi formed an epoch in the history of painting, by concentrating the genius of Giotto on a series of masterpieces, so the Duomo of Orvieto, by giving free scope to the school of Pisa, marked a point in the history of sculpture. It would be difficult to find elsewhere even separate works of greater force and beauty belonging to this, the first or architectural, period of Italian sculpture; and nowhere has the whole body of Christian belief been set forth with method more earnest and with vigour more sustained.[[68]] The subjects selected by these unknown craftsmen for illustration in marble, are in many instances the same as those afterwards painted in fresco by Michael Angelo and Raphael at Borne. Their treatment, for example, of the creation of Adam and Eve, adopted in all probability from still earlier and ruder workmen, after being refined by the improvements of successive generations, may still be observed in the triumphs of the Sistine Chapel and the Loggie.[[69]] It was the practice of Italian artists not to seek originality by diverging from the traditional modes of presentation, but to prove their mastery by rendering these as perfect and effective as the maturity of art could make them. For the Italians, as before them for the Greeks, plagiarism was a word unknown, in all cases where it was possible to improve upon the invention of less fortunate predecessors. The student of art may, therefore, now enjoy the pleasure of tracing sculpturesque or pictorial motives from their genesis in some rude fragment to their final development in the master-works of a Lionardo or a Raphael, where scientific grouping of figures, higher idealisation of style, the suggestion of freer movement, and more varied dramatic expression yield at last the full flower that the simple germ enfolded.
Among the most distinguished scholars of Niccola Pisano's tradition must now be mentioned Andrea da Pontadera, called Andrea Pisano, who carried the manner of his master to Florence, and helped to fulfil the destiny of Italian sculpture by submitting it to the rising art of painting. Under the direction of Giotto he carved statues for the Campanile and the façade of S. Maria del Fiore; and in the first gate of the Baptistery, he bequeathed a model of bas-relief in bronze, which largely influenced the style of masters in the fifteenth century. To overpraise the simplicity and beauty of design, the purity of feeling, and the technical excellence of Andrea's bronze-work, would be difficult. Many students will always be found to prefer his self-restraint and delicacy to the more florid manner of Ghiberti.[[70]] What we chiefly observe in this gate is the control exercised by the sister art of painting over his mode of conception and treatment. If Giovanni Pisano developed the dramatic and emphatic qualities of Gothic sculpture, Andrea was attracted to its allegories; if Giovanni infused romantic vehemence of feeling into the frigid classicism of his father, Andrea diverged upon another track of picturesque delineation. A new sun had now arisen in the heavens of art. This was the sun of Giotto, whose genius, eminently pictorial, brought the Italians to a true sense of their æsthetical vocation, illuminating with its brightness the elder and more technically finished craft of the stone-carver. Sculpture, which in the school of Niccola Pisano had been subordinate to architecture, became a sub-species of painting in the hands of Andrea.
It was thus, as I have elsewhere stated, that the twofold doom of plastic art in Italy was accomplished. In order to embody the ideas of Christianity, art had to think more of expression than of pure form. Expression is the special sphere of painting; and therefore sculpture followed the lead of the sister art, as soon as painting was strong enough to give that lead, instead of remaining, as in Greece, the mistress of her own domain. On the deeper reasons for this subordination of sculpture to painting I have dwelt already, while showing that a large class of subjects, where physical qualities are comparatively indifferent and of no account, were forced upon the artist by Christianity.[[71]] Humility and charity may be found alike in blooming youth or in ascetic age; nor is it possible to characterize saints and martyrs by those corporeal characteristics which distinguish a runner from a boxer, or a chaste huntress from a voluptuous queen of love. Italian sculpture abandoned the presentation of the naked human body as useless. The emotions written on the face became of more importance than the modelling of the limbs, and recourse was had to allegorical symbols or emblematic attitudes for the interpretation of the artist's thought. Andrea Pisano's figure of Hope, raising hands and eyes toward an offered crown, seems but a repetition of the motive expressed by Giotto in the chiaroscuro frescoes of the Arena chapel.[[72]] Owing to similar causes, drapery, which in Greece had served to illustrate the structure or the movement of the body it clothed, was used by the Italian sculptors to conceal the limbs, and to enhance by flowing skirt or sinuous fold or agitated scarf some quality of the emotions. The result was that sculpture assumed a place subordinate to painting, and that the masterpieces of the early Italian carvers are chiefly bas-reliefs—pictures in bronze or marble.[[73]]
In a like degree, though not for the same reason, sculpture in Italy remained subordinate to architecture, until such time as the neo-Hellenism of the full Renaissance produced a crowd of pseudo-classic statues, destined to take their places—not in churches, but in the courtyards of palaces and on the open squares of cities. The cause of this fact is not far to seek. In ancient Greece the temple had been erected for the god, and the statue dwelt within the cella like a master in his house. Christianity forbade an image of the living God; consequently the Church had another object than to roof the statue of a deity. It was the meeting-place of a congregation bent on worshipping Him who dwells not in houses made with hands, and whom the heaven of heavens cannot contain. The vast spaces and aërial arcades of mediæval architecture had their meaning in relation to the mystic apprehension of an unseen power. It followed of necessity that the carved work destined to decorate a Christian temple could never be the main feature of the building. It existed for the Church, and not the Church for it.[[74]]