To understand and explain this coöperation we must make clear how the soul and the cells in their _innermost_ nature are united. And we shall learn this by going to the bottom of the meaning of the expression that a common substance so governs their relationship that the collective wants of the cells become the individual wants of the soul. How then are the soul and the cells intrinsically connected? The answer may be derived in two ways. We might take both the subjective and the objective side of the wants as our point of view. If we first consider the subjective side the relationship between the soul and the cells may be stated as follows: We have previously pointed out that in its wants a living being perceives its own ego as related to something else. This is an axiom that needs no demonstration. If now the soul comprehends the collective wants of the cells as its own, this can only mean that the soul comprehends that part of the cells’ inner nature which expresses itself as their collective wants, as a part of its own ego. Again the cells within the same limits on their part comprehend the soul’s inner nature as belonging to their own individuality. The connection within these limits is so intimate that they cannot comprehend themselves without at the same time comprehending each other. The soul must consequently perceive the body as its own body because the same wants that cause the cells to upbuild the soul also belong to the soul’s own entity. On the other hand the soul in conceiving itself cannot comprehend the cells as such because the identity is not extended to their whole individuality. When a being conceives the wants of somebody else as its own wants it is at the same time directly influenced by the other. Thus the soul and the cells act upon each other throughout the body. A will of the soul takes with natural necessity the form of a common impulse upon the cells bringing them into action in the will’s direction. If the soul, for instance, wishes to move an arm or a hand, a collective want is simultaneously created in the cells that form the organ in question to execute that movement.