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THE CONTINUING BESTSELLING CLASSIC - as seen in "The Secret". Written in 1909 as a course and published as a book in 1912, this book was attributed by Napoleon Hill (Think and Grow Rich, Law of Success) as key to his sucess.Get the Master Key to unlock all of life's secrets. Formatted for your easy reading and study, this book contains a complete system of personal development which allows you to improve any area of your life - permanently.WARNING: This author makes controversial statements which contradict modern scientific opinion.Trade paperback edition also available.A Go Thunk Yourself(TM) Reference.