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...
Do not listen to those who weep and complain, for their disease is contagious.
In prosperity our friends know us; in adversity we know our friends.