Man's soul nature as his own inner world is different from his bodily
nature. When attention is turned to even the simplest sensation, what
is personally his own comes at once to the fore. Thus no one can know
whether one person perceives even a simple sensation in exactly the
same way as another. It is known that there are people who are
color-blind. They see things only in various shades of grey. Others
are only partially color-blind. Because of this they are unable to
distinguish between certain shades of color. The picture of the world
that their eyes gives them is different from that of so-called normal
persons. The same holds good more or less in regard to the other
senses. Thus it will seem without further elaboration that even simple
sensations belong to the inner world. I can perceive with my bodily
senses the red table that another person perceives but I cannot
perceive his sensation of red. We must, therefore, describe sensation
as belonging to the soul. If this single fact is grasped quite
clearly, we shall soon cease to regard inner experiences as mere brain
processes or something similar. Feeling must link itself with
sensation. One sensation causes us pleasure, another displeasure.
These are stirrings of our inner life, our soul life. In our feelings
we create a second world in addition to the one working on us from
without. A third is added to this the world of the will.
Through the will we react on the outer world thereby stamping the
impress of our inner being upon it. The soul of man, as it were,
flows outwards in the activities of his will.
The actions of man differ from the occurrences of outer nature in that
they bear the impress of his inner life. Thus the soul as man's own
possession stands confronting the outer world. He receives from the
outer world the incitements, but he creates in response to these
incitements a world of his own. The body becomes the foundation of
the soul being of man.