Augustine "Og" Mandino II (December 12, 1923 – September 3, 1996[1]) was an American author. He wrote the bestselling book The Greatest Salesman in the World. His books have sold over 50 million copies and have been translated into over twenty-five different languages. He was the president of Success Unlimited magazine until 1976 and is an inductee of the National Speakers Association's Hall of Fame.
