Phaedrus

Socrates. Now in all these states, whoever lives justly obtains a better lot, and whoever lives unjustly, a worse. For each soul returns to the place whence it came in ten thousand years; for it does not regain its wings before that time has elapsed, except the soul of him who has been a guileless philosopher or a philosophical lover; these, when for three successive periods of a thousand years they have chosen such a life, after the third period of a thousand years become winged in the three thousandth year and go their way; but the rest, when they have finished their first life, receive judgment, and after the judgment some go to the places of correction under the earth and pay their penalty, while the others, made light and raised up into a heavenly place by justice, live in a manner worthy of the life they led in human form. But in the thousandth year both come to draw lots and choose their second life, each choosing whatever it wishes. Then a human soul may pass into the life of a beast, and a soul which was once human, may pass again from a beast into a man. For the soul which has never seen the truth can never pass into human form. For a human being must understand a general conception formed by collecting into a unity by means of reason the many perceptions of the senses; and this is a recollection of those things which our soul once beheld, when it journeyed with God and, lifting its vision above the things which we now say exist, rose up into real being. And therefore it is just that the mind of the philosopher only has wings, for he is always, so far as he is able, in communion through memory with those things the communion with which causes God to be divine. Now a man who employs such memories rightly is always being initiated into perfect mysteries and he alone becomes truly perfect; but since he separates himself from human interests and turns his attention toward the divine, he is rebuked by the vulgar, who consider him mad and do not know that he is inspired. All my discourse so far has been about the fourth kind of madness, which causes him to be regarded as mad, who, when he sees the beauty on earth, remembering the true beauty, feels his wings growing and longs to stretch them for an upward flight, but cannot do so, and, like a bird, gazes upward and neglects the things below. My discourse has shown that this is, of all inspirations, the best and of the highest origin to him who has it or who shares in it, and that he who loves the beautiful, partaking in this madness, is called a lover.