IV. Body, Soul and Spirit

Just as the sentient soul enters into mutual action and reaction with the body, so does it also in thinking, with the spirit. In the first place thinking serves the sentient soul. Man forms thoughts about his sensations. He thus enlightens himself regarding the outside world. The child that has burnt itself thinks it over, and reaches the thought “fire burns.” Nor does man follow blindly his impulses, instincts, passions; his thinking about them brings about the opportunity through which he can gratify them. What is called material civilisation moves entirely in this direction. It consists in the services which thinking renders to the sentient soul. An immeasurable amount of thought-power is directed to this end. It is thought-power that has built ships, railways, telegraphs, telephones; and by far the greatest proportion of all this serves only to satisfy the needs of sentient souls.