Napoleon Hill (October 26, 1883 – November 8, 1970) was an American author who was one of the earliest producers of the modern genre of personal-success literature. He is widely considered to be one of the great writers on success. His most famous work, Think and Grow Rich, is one of the best-selling books of all time. Hill's works examined the power of personal beliefs, and the role they play in personal success. He became an advisor to President Franklin D. Roosevelt from 1933-36. "What the mind of man can conceive and believe, it can achieve" is one of Hill's hallmark expressions. How achievement actually occurs, and a formula for it that puts success in reach for the average person, were the focal points of Hill's books. Hill considered the turning point in his life to have occurred in the year 1908 with his assignment, as part of a series of articles about famous and successful men, to interview the industrialist Andrew Carnegie. At the time, Carnegie was one of the most powerful men in the world. Hill discovered that Carnegie believed that the process of success could be outlined in a simple formula that anyone would be able to understand and achieve. Impressed with Hill, Carnegie asked him if he was up to the task of putting together this information, to interview or analyze over 500 successful men and women, many of them millionaires, in order to discover and publish this formula for success. This book is dedicated to the works of Andrew Carnegie by Napoleon Hill.