2. Human Duality

The nerve-system is differentiated in the human organism in manifold ways the inner nerve-fibres for example, at the points where these develop into nerves of hearing, of seeing, etc., show us how diverse are its differentiations. Thus the nerve-system is something that reaches out everywhere through the organism in such a way as to comprise the most manifold inner diversities. When we observe the blood as it streams through the organism it shows us, even taking into account the transformation from red into blue blood, that it is, nevertheless, a unity in the whole organism. Having this character of unity, it comes into contact with the differentiated nerve-system, just as does the ego with the differentiated soul-life, for it also is made up of conceptions, sensations, will-impulses, feelings and the like. The further you pursue this comparison—and it is given meanwhile only as a comparison—the more clearly you will be shown that a far-reaching similarity exists in the relations of the two archetypes, the ego and the astral body, to their respective images, the blood-system and the nerve-system. Now, of course, one may say at this point that blood is surely everywhere blood. At the same time, it undergoes a change in flowing through the organism; and consequently we can draw a parallel between these changes that take place in the blood and what goes on in the ego. But our ego is a unity. As far back as we can remember in our life between birth and death we can say: “This ego was always present, in our fifth year just as in our sixth year, yesterday just as to-day. It is the same ego.” And yet, if we now look into what this ego contains, we shall discover this fact: This ego that lives in me is filled with a sum-total of conceptions, sensations, feelings, etc., which are to be attributed to the astral body and which comes into contact with the ego. A year ago this ego was filled with a different content, yesterday it contained still another, and to-day its content is again different. Thus the ego, we see, comes into contact with the entire soul-content, streams through this entire soul-content. And, just as the blood streams through the whole organism and comes everywhere into contact with the differentiated nerve-system, so does the ego come together with the differentiated life of the soul, in conceptions, feelings, will-impulses and the like. Already, therefore, this merely comparative method of study shows us that there is a certain justification in looking upon the blood system as an image of the ego, and the nerve system as an image of the astral body, as higher, super-sensible members of the nature of man.