"It is those who concentrates on but one thing at a time who advance in this world. The great man or woman is the one who never steps outside his or her specialty or foolishly dissipates his or her individuality."
Augustine "Og" Mandino II (December 12, 1923 – September 3, 1996) was an American author and salesman. 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 25 languages. He was the president of Success Unlimited magazine until 1976 and was inducted into the National Speakers Association's Hall of Fame.
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Augustine "Og" Mandino II (December 12, 1923 – September 3, 1996) was an American author and salesman. 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 25 languages. He was the president of Success Unlimited magazine until 1976 and was inducted into the National Speakers Association's Hall of Fame.