Reproduced in its entirety from the original manuscript, details the author's theories on the methods the Devil uses to ensnare and control the minds of human beings. Exploring the innermost depths of the psychology of motivation to understand why so many individuals, including the author, cannot find the initiative and courage they need to consistently implement the philosophy of individual achievement, Hill went so far as to interview the Devil himself, concluding that complacency and mediocrity are not the root issue; they are symptoms of deeper ills that we are conditioned by society to accept. The resulting confession from the Devil made this book so controversial as to remain unpublished for over 70 years. Hill suggests that humans can subvert the Devil through independence, useful service, harmonious relationships, the sixth sense, and hypnotic rhythm.