For three years the boy worked steadily with his new master, but by that time Barile saw that better teaching was needed than he could give. So after much thought the old man went to the great Florentine artist Piero di Cosimo, and asked him if he would agree to receive Andrea as his pupil. 'You will find the boy no trouble,' he urged. 'He has wonderful talent, and already he has learnt to mix his colours so marvellously that to my mind there is no artist in Florence who knows more about colour than little Andrea' Cosimo shook his head in unbelief. The boy was but a child, and this praise seemed absurd. However, the drawings were certainly extraordinary, and he was glad to receive so clever a pupil. But little by little, as Cosimo watched the boy at work, his unbelief vanished and his wonder grew, until he was as fond and proud of his pupil as the old master had been. 'He handles his colours as if he had had fifty years of experience,' he would say proudly, as he showed off the boy's work to some new patron. And truly the knowledge of drawing and colouring seemed to come to the boy without any effort. Not that he was idle or trusted to chance. He was never tired of work, and his greatest joy on holidays was to go of and study the drawings of the great Michelangelo and Leonardo da Vinci. Often he would spend the whole day copying these drawings with the greatest care, never tired of learning more and more. As Andrea grew older, all Florence began to take note of the young painter--'Andrea del Sarto,' as he was called, or 'the tailor's Andrew,' for sarto is the Italian word for tailor. What a splendid new star this was rising in the heaven of Art! Who could tell how bright it would shine ere long? Perhaps the tailor's son would yet eclipse the magic name of Raphael. His colour was perfect, his drawing absolutely correct. They called him in their admiration 'the faultless painter.' But had he, indeed, the artist soul? That was the question. For, perfect as his pictures were, they still lacked something. Perhaps time would teach him to supply that want. Meanwhile there was plenty of work for the young artist, and when he set up his own studio with another young painter, he was at once invited to fresco the walls of the cloister of the Scalzo, or bare-footed friars. This was the happiest time of all Andrea's life. The two friends worked happily together, and spent many a merry day with their companions. Every day Andrea learned to add more softness and delicacy to his colouring until his pictures seemed verily to glow with life. Every day he dreamed fresh dreams of the fame and honour that awaited him. And when work was over, the two young painters would go off to meet their friends and make merry over their supper as they told all the latest jokes and wittiest stories, and forgot for a while the serious art of painting pictures.