"The Book of Life" by Upton Sinclair Upton addresses the cultivation of the mind and the body in this 1922 volume. Sinclair's goal was to attempt to tell the reader how to live, how to find health, happiness and success, and how to develop fully both the mind and the body. Part One: The Book of the Mind covers such subjects as faith, reason, morality, and the subconscious. Part Two: The Book of the Body develops such subjects as errors in diet, the fasting cure, food and poisons, work and play, and diseases and their cures.