"Oprah Winfrey, who majored in speech and theater, delivered the commencement address at Harvard University on May 30, 2013. ""The key to life is to develop an internal moral, emotional GPS that can tell you which way to go,"" she <a href=""http://news.harvard.edu/gazette/story/2013/05/winfreys-commencement-address/"" target=""_blank"">said</a>."