In his masterpiece and success formula known as Think and Grow Rich, Best-selling author Napoleon Hill teaches you the 17 success principles used by the great success stories of the early 20th century. Napoleon Hill interviewed with William Wrigley, Alexander Graham Bell, Andrew Carnegie and 500 others. He shares with you the secrets that helped all of these great leaders rise to the top in their respected industries. Many of today’s top achievers credit Napoleon Hill’s work as well as Think and Grow Rich as being the blueprint for their success.