So, in the first division of the egg-cell is set up the first plane of psychic and physical life, remaining radically the same throughout the whole existence of the individual. The two original nuclei of the egg-cell remain the same two original nuclei within the corpus of the adult individual. Their psychic and their physical dynamic is the same in the solar plexus and lumbar ganglion as in the two nuclei of the egg-cell. The first great division in the egg remains always the same, the unchanging great division in the psychic and the physical structure; the unchanging great division in knowledge and function. It is a division into polarized duality, psychical and physical, of the human being. It is the great vertical division of the egg-cell, and of the nature of man.

Then, this division having taken place, there is a new