Accordingly in 1498, Andrea being then eleven years of age, a life of earnest study began. Piero di Cosimo, odd and misanthropic as he was, had yet a true appreciation of talent, and showed an earnest interest in his pupil, giving him--with plenty of queer treatment--a thorough training. "He was not allowed to make a line which was not perfect" [Footnote: Rosini, _Storia della Pittura_, chap. xvii. p. 40.] while in Piero's school. But excellent as his art teaching may have been, the boy's morale could not have been raised more here than under the rough but good-natured Barile. We have seen Piero di Cosimo in his youth, the serious, absent young man, who never joked with his juniors in Cosimo Roselli's shop; we see him now, with his youthful oddities hardened into eccentricities, and his reserve deepened to misanthropy. No woman's hand softened and refined his house, no cleansing broom was allowed within his door, and no gardener's hand cleared the weeds or pruned the vines in his garden. He so believed in nature unassisted that he took his meals without the intervention of a cook. When the fire was lighted to boil his size or glue he would cook fifty or sixty eggs and set them apart in a basket, to which he had recourse when the pangs of hunger compelled him. All this was morally very bad for a boy so young. And then woe betide the poor little fellow if he whistled, sneezed, or made any other noise! his nervous master would be out of temper for a day afterwards. On wet days Piero was merrier, for he would watch the drops splashing into the pools, and laugh as if they were fairies. Sometimes he would take Andrea for a walk, and all at once stop and gaze at a heap of rubbish, or mark of damp on a lichened wall, picturing all kinds of monsters and weird scenes in its discolourations.