Wikipedia Wrote:The Law of Success (originally The Law of Success in 16 Lessons) is the title of Napoleon Hill’s first book set, published initially in 1925 as an multi-volume correspondence course and later more compact formats in recent years. The work was originally commissioned at the request of Andrew Carnegie at the conclusion of a multi-day interview with Hill, and was based upon interviews of over 500 American millionaires across nearly 20 years, including such self-made industrial giants as Henry Ford, J. P. Morgan, John D. Rockefeller, Alexander Graham Bell, and Thomas Edison. The original edition featured the eponymous 16 lessons, with the updated 21st-Century Edition featuring an additional 17th lesson drawn from later notes and lecture materials.