wandering soul, and goes hither and thither working good or evil, until the moment of its death has come; and gave many examples, received, it said, from many gods. Eros had taught them how to fashion forms in which a divine soul could dwell, and whisper what they would into sleeping minds; and Ate, forms from which demonic beings could pour madness, or unquiet dreams, into sleeping blood; and Hermes, that if you powerfully imagined a hound at your bedside it would keep watch there until you woke, and drive away all but the mightiest demons, but that if your imagination was weakly, the hound would be weakly also, and the demons prevail, and the hound soon die; and Aphrodite, that if you made, by a strong imagining, a dove crowned with silver and had it flutter over your head, its soft cooing would make sweet dreams of immortal love gather and brood over mortal sleep; and all divinities alike had revealed with many warnings and lamentations that all minds are continually giving birth to such beings, and sending them forth to work health or disease, joy or madness. If you would give forms to the evil powers, it went on, you were to make them ugly, thrusting out a lip, with the thirsts of life, or breaking the proportions of a body with the burdens of life; but the divine powers would only appear in beautiful shapes, which are but, as it were, shapes trembling out of existence, folding up into a timeless ecstasy, drifting with half-shut eyes, into a sleepy stillness. The bodiless souls who descended into these forms were what men called the moods; and worked all great changes in the world; for just as the magician or the artist could call them when he would, so they could call out of the mind of the magician or the artist, or if they were demons, out of the mind of the mad or the ignoble, what shape they would, and through its voice and its gestures pour themselves out upon the world. In this way all great events were accomplished; a mood, a divinity, or a demon, first descending like a faint sigh into men's minds and then changing their thoughts and their actions until hair that was yellow had grown black, or hair that was black had grown yellow, and empires moved their border, as though they were but drifts of leaves. The rest of the book contained symbols of form, and sound, and colour, and their attribution to divinities and demons, so that the initiate might fashion a shape for any divinity or any demon, and be as powerful as Avicenna among those who live under the roots of tears and of laughter. IV