Fewer and Truer
¶ Many things which have been found to be true in almost every instance could have been included in this course. But we prefer to make fewer statements and have those of bedrock certainty. Therefore this course, like all our courses, consists exclusively of those facts which have been found to be true in every particular of people in normal health.
IMPORTANT
The Five Extremes
¶ This book deals with PURE or UNMIXED types only. When you understand these, the significance of their several combinations as seen in everyday life will be clear to you.
The Human Alphabet
¶ Just as you can not understand the meaning of a word until you know the letters that go into the makeup of that word, you cannot analyze people accurately until you get these five extreme types firmly in your mind, for they are your alphabet.
Founded in Five Biological Systems
¶ Each PURE type is the result of the over-development of one of the five biological systems possessed by all human beings—the nutritive, circulatory, muscular, bony or nervous.