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PREFACE.
The great truths of Nature are here ready for you, reader.
Are you ready for them?
Are you free from prejudice, and willing to read and reason without considering the opinions of so-called authorities? To a free and intelligent human being there is no authority for him higher than his own reasoning power.
If you are free from the slavery of prejudice this book will give you food for thought. It will teach you that weakness is a crime—that it is the result of plain, easily avoided causes—that if your body is weak, or diseased, there is not the slightest excuse for remaining so—that health and strength of a high degree is the natural heritage of man and woman, and if this superb condition
