Share on Facebook Follow on Facebook Add to Google+ Connect on Linked in Subscribe by Email Print This Post “The greatest discovery of all time is that a person can change his future by merely changing his attitude.” Oprah Winfrey Inspirational quotes, Oprah Winfrey, quotable quotes Inspirational Quote: The greatest discovery of all time is that a person can change his future by merely changing his attitude added by Philimon Badagawa. on September 11, 2014View all posts by Philimon Badagawa. → Post Views: 805