20 April 1999 April 19, 2013 Author: Staff Columbine High School massacre. Famous Words of Inspiration..."Try not to become a man of success but a man of value." Albert Einstein — Click here for more from Albert Einstein Related posts: 20 July 1999 21 January 1999 16 July 1999 3 January 1999 26 March 1999 20 April 1998 Categories: History Tags: 1999, 20 April