2. Human Duality

It is possible to bring about such a condition of the human organism; and this is done in a particular way, by means of certain concepts, emotions and feelings which the human being has experienced and made a part of himself, and which, if this inner experiment is to be truly successful, ought, properly speaking, to be really lofty, moral or intellectual concepts. When a man practises a rigorous inner concentration of the soul on such imaginative concepts, forming these into symbols let us say, it then happens, if he does this in a state of waking consciousness, that he takes complete control of the nerve and, as a result of this inner concentration, draws it back to a certain extent from the course of the blood. For when man simply gives himself up to normal, external impressions, the natural connection between the nerve and the circulation is present; but if, in strict concentration upon his ego, he holds fast to what he obtains in a normal way, apart from all external impressions and apart from what the outside world brings about in the ego, he then has something in his soul which can have originated only in the consciousness and is the content of consciousness, and which makes a special demand upon the nerve and separates its activity then and there from its connection with the activity of the blood. The consequence of this is that, by means of such inner concentration, which actually breaks the connection between the nerve and the blood, that is, when it is so strong that the nerve is in a certain sense freed from its connection with the blood-system, the nerve is at the same time freed from that for which the blood is the external instrument, namely, from the ordinary experiences of the ego. And it is, indeed, a fact—this finds its complete experimental support through the inner experiences of that spiritual training designed to lead upward into the higher worlds—that as a result of such concentration the entire nerve-system is removed from the blood-system and from its ordinary tasks in connection with the ego. It then happens, as the particular consequence of this, that whereas the nerve-system had previously written its action upon the tablet of the blood, it now permits what it contains within itself as working power to return into itself, and does not permit it to reach the blood. It is, therefore, possible purely through processes of inner concentration, to separate the blood-system from the nerve-system, and thereby to cause that which, pictorially expressed, would otherwise have flowed into the ego, to course back again into the nerve-system.