Plato was twenty-eight when Socrates died;[18] and though he was not present at the drinking of the hemlock, yet the passing of the master must have been a tragic blow to him. It brought him face to face with death, the mother of metaphysics. Proudest of all philosophers, he did not hide his sense of debt to Socrates: “I thank the gods,” he said, “that I was born freeman, not slave; Greek, not barbarian; man, not woman; but above all that I was born in the time of Socrates.” The old philosopher gone, Athens became for a time intolerable to Plato (some say, Plato to Athens); and the young philosopher sailed off to see foreign shores and take nourishment of other cultures. He liked the peaceful orderliness and aged dignity with which a long dominant priesthood had invested Egypt; beside this mellow civilization, he was willing to be told, the culture of his native Athens was but a precarious ethnological sport. He liked the Pythagoreans of southern Italy, with their aristocratic approach to the problem of social construction and their communal devotion to plain living and high thinking; above all he liked their emphasis on harmony as the fundamental pervasive relation of all things and as the ideal in which our human discords might be made to resolve themselves had men artistry enough. Other lands he saw and learnt from: stories tell how he risked his handsome head to build an ideal state in Syracuse; how he was sold into slavery and redeemed by a friend; and how he passed down through Palestine even to India, absorbing the culture of their peoples with a kind of osmotic genius. And at last, after twelve years of wandering, he heard again the call of Athens, and went home, stored with experience and ripe with thought.