“What the mind of man can conceive and believe, it can achieve.” ~ Napoleon Hill (born October 26, 1883 to November 8, 1970)
Napoleon Hill was an American author. Hill was an advisor to U.S. President Franklin D. Roosevelt from 1933 to 1936. He wrote Think and Grow Rich (1937), a perennial best seller which has sold more than 30 million copies according to Wikipedia.
[Source: Quotation from Wikipedia. Dates and biographical information from Wikipedia, accessed November 5, 2010.]