Andrea was never at rest, but was ever labouring at some work either in painting or in sculpture; and sometimes he would change from one to another, in order to avoid growing weary of working always at the same thing, as many do. Wherefore, although he did not put the aforesaid cartoons into execution, yet he did paint certain pictures; among others, a panel for the Nuns of S. Domenico in Florence, wherein it appeared to him that he had acquitted himself very well; whence, no long time after, he painted another in S. Salvi for the Monks of Vallombrosa, containing the Baptism of Christ by S. John. In this work he was assisted by Leonardo da Vinci, his disciple, then quite young, who painted therein an angel with his own hand, which was much better than the other parts of the work; and for that reason Andrea resolved never again to touch a brush, since Leonardo, young as he was, had acquitted himself in that art much better than he had done. Now Cosimo de' Medici, having received many antiquities from Rome, had caused to be set up within the door of his garden, or rather, courtyard, which opens on the Via de' Ginori, a very beautiful Marsyas of white marble, bound to a tree-trunk and ready to be flayed; and his grandson Lorenzo, into whose hands there had come the torso and head of another Marsyas, made of red stone, very ancient, and much more beautiful than the first, wished to set it beside the other, but could not, because it was so imperfect. Thereupon he gave it to Andrea to be restored and completed, and he made the legs, thighs, and arms that were lacking in this figure out of pieces of red marble, so well that Lorenzo was highly satisfied and had it placed opposite to the other, on the other side of the door. This ancient torso, made to represent a flayed Marsyas, was wrought with such care and judgment that certain delicate white veins, which were in the red stone, were carved by the craftsman exactly in the right places, so as to appear to be little nerves, such as are seen in real bodies when they have been flayed; which must have given to that work, when it had its original finish, a most life-like appearance.