Lecture II
Let us take a very simple example: the tickling irritation which causes coughing, and the actual cough itself. In so far as they belong to the upper sphere their complementary counterpart in the lower sphere is diarrhea. There is always a counterpart to every such activity. And the key to the understanding of man consists in the correct apprehension of these correspondences with several of which we shall deal in the course of our study.
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