[18] [cap.5] But the others who say that our mind is a portion of the ethereal nature, have by this assertion attributed to man a kindred with the air; but the great Moses has not named the species of the rational soul by a title resembling that of any created being, but has pronounced it an image of the divine and invisible being, making it a coin as it were of sterling metal, stamped and impressed with the seal of God, the impression of which is the eternal word.