The Five Types of Human Beings

Science has discovered that there are five types of human beings. The average american man or woman is a combination of some two of these types, with a third discernible in the background. Each pure type is the result of the over development of one of the five biological systems possessed by all hman beings. To analyze people, to understand human beings, familiarize yourself first with the pure or unmixed types then it will be easy and fascinating to spell out their combinations.