In this book, the author states that the secret of eternal youth can not be found through a study of the body alone, nor the mind alone; it does not have its sole existence in the elements of the earth, nor does it exercise its power exclusively through those forces of nature that can not be seen. The author teaches us how to learn to perpetuate youth, in order to add immeasurably to the joy of living, and since man is made for happiness, everything that can increase his or her happiness should be made a part of his or her life.
