his philosophy entirely from himself; but we are not to suppose from this that he did not attend the lectures or study the writings of other philosophers. Neither is it to be understood that he was altogether original in his philosophy as far as content was concerned; for, as will be noted later, his physical philosophy especially is that of Leucippus and Democritus. It was at Mitylene in Lesbos that he first came forward as teacher of an original philosophic system, and then again at Lampsacus in Asia Minor; he did not, however, find very many hearers. After having for some years led an unsettled life, he returned in about the six and thirtieth year of his age to Athens, to the very centre of all Philosophy; and there, some time after, he bought for himself a garden, where he lived and taught in the midst of his friends. Though so frail in body that for many years he was unable to rise from his chair, in his manner of living he was most regular and frugal, and he devoted himself entirely to science, to the exclusion of all other interests. Even Cicero, though in other respects he has little to say in his favour, bears testimony to the warmth of his friendships, and adds that no one can deny he was a good, a humane, and a kindly man. Diogenes Laërtius gives special commendation to his reverence towards his parents, his generosity to his brothers, and his benevolence to all. He died of stone in the seventy-first year of his age. Just before his death he had himself placed in a warm bath, drank a cup of wine, and charged his friends to remember what he had taught them.[145]