The result of more than twenty years of study of many individuals who had amassed personal fortunes, Napoleon Hill evolved 16 “laws” to be applied to achieve success. Think and Grow Rich condenses them, providing the reader with 13 principles in the form of a “Philosophy of Achievement”. This first edition of Think and Grow Rich was written in 1937 by Napoleon Hill, promoted as a personal development and self-improvement book. Hill writes that he was inspired by a suggestion from business magnate and philanthropist Andrew Carnegie. While the book’s title and much of the text concerns increased income, the author insists that the philosophy taught in the book can help people succeed in any line of work, to do and be anything they can imagine.