Lecture I

This fact is closely connected with the development of materialism in the middle of the nineteenth century. For what is the human organism? The human organism is a faithful copy of man's soul-spiritual nature. It is not surprising that people who are incapable of insight into the soul and spirit of man see in the structure of the human organism an explanation of the whole human being. This is particularly the case when one takes into special consideration the organization of the head, and in the head in turn the organization of the nerves.