Phaedrus

Socrates.And a third kind of possession and madness comes from the Muses. This takes hold upon a gentle and pure soul, arouses it and inspires it to songs and other poetry, and thus by adorning countless deeds of the ancients educates later generations. But he who without the divine madness comes to the doors of the Muses, confident that he will be a good poet by art, meets with no success, and the poetry of the sane man vanishes into nothingness before that of the inspired madmen. All these noble results of inspired madness I can mention, and many more. Therefore let us not be afraid on that point, and let no one disturb and frighten us by saying that the reasonable friend should be preferred to him who is in a frenzy. Let him show in addition that love is not sent from heaven for the advantage of lover and beloved alike, and we will grant him the prize of victory. We, on our part, must prove that such madness is given by the gods for our greatest happiness; and our proof will not be believed by the merely clever, but will be accepted by the truly wise. First, then, we must learn the truth about the soul divine and human by observing how it acts and is acted upon. And the beginning of our proof is as follows: Every soul is immortal. For that which is ever moving is immortal but that which moves something else or is moved by something else, when it ceases to move, ceases to live. Only that which moves itself, since it does not leave itself, never ceases to move, and this is also the source and beginning of motion for all other things which have motion. But the beginning is ungenerated. For everything that is generated must be generated from a beginning, but the beginning is not generated from anything; for if the beginning were generated from anything, it would not be generated from a beginning. And since it is ungenerated, it must be also indestructible; for if the beginning were destroyed, it could never be generated from anything nor anything else from it, since all things must be generated from a beginning. Thus that which moves itself must be the beginning of motion. And this can be neither destroyed nor generated, otherwise all the heavens and all generation must fall in ruin and stop and never again have any source of motion or origin. But since that which is moved by itself has been seen to be immortal, one who says that this self-motion is the essence and the very idea of the soul, will not be disgraced.