Charles Francis Haanel (May 22, 1866 - November 27, 1949) was a noted American New Thought author and a businessman. He is best known for his contributions to the New Thought Movement through his book The Master Key System. Hannel's book The Master Key System, was published in 1912, when he was 46 years old. It is written in the form of a course in New Thought, mental development, financial success, and personal health. The book was heavily promoted in the pages of Elizabeth Towne's New Thought magazine The Nautilus. By 1933 it had sold over 200,000 copies worldwide. Haanel practiced the...