a man may change them as many times and in as many ways as he wishes, without any scruple. Giovan Francesco learned many things from Leonardo, but particularly how to represent horses, in which he so delighted that he fashioned them of clay and of wax, in the round or in low-relief, and in as many manners as could be imagined; and of these there are some to be seen in our book which are so well drawn, that they bear witness to the knowledge and art of Giovan Francesco. He knew also how to handle colours, and executed some passing good pictures, although his principal profession was sculpture. And since he lived for a time in the Via de' Martelli, he became much the friend of all the men of that family, which has always had men of the highest ability and worth, and particularly of Piero, for whom, being the nearest to his heart, he made some little figures in full-relief, and, among others, a Madonna with the Child in her arms seated upon some clouds that are covered with Cherubim. Similar to that is another that he painted after some time in a large picture in oils, with a garland of Cherubim that form a diadem around the head of Our Lady. The Medici family having then returned to Florence, Rustici made himself known to Cardinal Giovanni as the protege of his father Lorenzo, and was received with much lovingness. But, since the ways of the Court did not please him and were distasteful to his nature, which was altogether simple and peaceful, and not full of envy and ambition, he would always keep to himself and live the life as it were of a philosopher, enjoying tranquil peace and repose. And although he did at times choose to take some recreation, and found himself among his friends in art or some citizens who were his intimate companions, he did not therefore cease to work when the desire came to him or the occasion presented itself. Wherefore, for the visit of Pope Leo to Florence in the year 1515, at the request of Andrea del Sarto, who was much his friend, he executed some statues that were held to be very beautiful; which statues, since they pleased Cardinal Giulio de' Medici, were the reason that the Cardinal caused him to make, for the summit of the fountain that is in the great court of the Palace of the Medici, the nude Mercury of bronze about one braccio in height, standing on a ball in the act of taking flight. In the hands of that figure Rustici placed an instrument that is made to revolve by the water that it pours down from above, in the following manner: one leg being perforated, a pipe passes through it and through the torso, and the water, having risen to the mouth of the figure, falls upon that instrument, which is balanced with four thin plates fixed after the manner of a butterfly, and causes it to revolve. That figure, I say, for a small work, was much extolled. Not long afterwards, Giovan Francesco made for the same Cardinal the model for a David to be cast in bronze (similar to that executed by Donato, as has