Diogenes Laërtius,
Lives of the Eminent Philosophers…
(1925)
“ To the query, "What is a friend?" his reply was, "A single soul dwelling in two bodies." Mankind, he used to say, were divided into those who were as thrifty as if they would live for ever, and those who were as extravagant as if they were going to die the next day. When some one inquired why we spend much time with the beautiful, "That," he said, "is a blind man's question." When asked what advantage he had ever gained from philosophy, he replied, "This, that I do without being ordered what some are constrained to do by their fear of the law." ”
