The Certosa of Pavia, lastly, is the centre of a school of sculpture that has little in common with the Florentine tradition. Antonio Amadeo[113] and Andrea Fusina, acting in concert with Ambrogio Borgognone the painter, gave it in the fifteenth century that character of rich and complex decorative beauty which many generations of artists were destined to continue and complete. Among the countless sculptors employed upon its marvellous façade Amadeo asserts an individuality above the rest, which is further manifested in his work in the Cappella Colleoni at Bergamo. We there learn to know him, not only as an enthusiastic cultivator of the mingled Christian and pagan manner of the _quattrocento_, but as an artist in the truest sense of the word sympathetic. The sepulchral portrait of Medea, daughter of the great Condottiere, has a grace almost beyond that of Della Quercia's "Ilaria."[114] Much, no doubt, is due to the peculiarly fragile beauty of the girl herself, who lies asleep with little crisp curls clustering upon her forehead, and with a string of pearls around her slender throat. But the sensibility to loveliness so delicate, and the power to render it in marble with so ethereal a touch upon the rigid stone, belong to the sculptor, and win for him our worship. The list of fifteenth-century sculptors is almost ended; and already, on the threshold of the sixteenth, stands the mighty form of Michael Angelo. Andrea Contucci da Sansavino and his pupil Jacopo Tatti, called also Sansovino, after his master, must, however, next be mentioned as continuing the Florentine tradition without subservience to the style of Buonarroti. Andrea da Sansavino was a sculptor in whom for the first time the faults of the mid-Renaissance period are glaringly apparent. He persistently sacrificed simplicity of composition to decorative ostentation, and tranquillity of feeling to theatrical effect. The truth of this will be acknowledged by all who have studied the tombs of the cardinals in S. Maria del Popolo already mentioned,[115] and the bas-reliefs upon the Santa Casa at Loreto. In technical workmanship Andrea proved himself an able craftsman, modelling marble with the plasticity of wax, and lavishing patterns of the most refined invention. Yet the decorative prodigality of this master corresponded to the frigid and stylistic graces of the neo-Latin poets. It was so much mannerism--adopted without real passion from the antique, and applied with a rhetorical intention. Those acanthus scrolls and honeysuckle borders, in spite of their consummate finish, fail to arrest attention, leaving the soul as unstirred as the Ovidian cadences of Bembo.