[83] [cap.23] Therefore, the faculty which is common to us with the irrational animals, has blood for its essence. And it, having flowed from the rational fountain, is spirit, not air in motion, but rather a certain representation and character of the divine faculty which Moses calls by its proper name an image, showing by his language that God is the archetypal pattern of rational nature, and that man is the imitation of him, and the image formed after his model; not meaning by man that animal of a double nature, but the most excellent species of the soul which is called mind and reason.