Christ's Incarnation and the Transformation of Human Destiny

We know that the several parts of the human body correspond to the principles of man. The physical body corresponds to itself; the glandular system to the etheric body; the nervous system to the astral body; and the circulatory system (that of the blood) to the ego. The ego entered physically into man through his being endowed more and more with blood, thus becoming ever more capable of devoting himself to the material world.