The secret of success is sincerity. Posted on May 17, 2011May 17, 2006 by admin “The secret of success is sincerity.” — Jean Giraudoux Author: Jean Giraudoux Category: success Tags: success, Jean Giraudoux Spread the love Related posts: Success consists of going from failure to Formal education will make you a living; Success is getting what you want. Happiness I have learned that success is to