II. The Elemental Kingdoms of Nature

And now, let us consider the physical body on the Earth. Here, the Ego is added. On the Earth, four members are interwoven. One part of the physical body is permeated by the etheric body, astral body and the Ego; a second part, by the etheric body and astral body; a third part, by the etheric body only; and a fourth part remains at the mineral stage. It has the same value as a mineral, and is still at the stage of Saturn. These four parts can be clearly distinguished in the physical body. The first part, which contains all four members, consists of the red blood corpuscles. Wherever we find red blood, these four members permeate one another.