"Plato taught that in the Rebirth, the soul was generally unconscious of its previous lives, although it may have flashes of recollection... Plato taught that the immaterial part of man—the soul—was a complex thing, being composed of a number of differing, though related, elements. Highest in the hierarchy of the soul elements he placed the Spirit, which, he taught, comprised consciousness, intelligence, will, choice between good and evil, etc., and which was absolutely indestructible and immortal, and which had its seat in the head. Then came two other parts of the soul, which survived the dissolution of the body, but which were only comparatively immortal, that is, they were subject to later dissolution and disintegration. Of these semi-material elements, one was the seat of the affections, passions, etc., and was located in the heart; while the other, which was the seat of the sensual and lower desires, passions, etc., was located in the liver. These two mentioned lower elements were regarded as not possessed of reason, but still having certain powers of sensation, perception, and will."