Challenges make you discover things about yourself that you never really knew. They're what make the instrument stretch - what make you go beyond the norm.

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• Mother Teresa

  Saint

  Friday, Aug 26, 1910
  Friday, Sep 05, 1997

• Martin Luther

  Monk

  Saturday, Nov 10, 1483
  Monday, Feb 18, 1546

• Aristotle

  Philosopher

  Thursday, Jan 01, 1970
  Thursday, Jan 01, 1970

• Joe Biden

  Vice President Of The United States

  Friday, Nov 20, 1942
  

• Steve Jobs

  Entrepreneur

  Thursday, Feb 24, 1955
  Wednesday, Oct 05, 2011

• Charles Spurgeon

  Preacher

  Thursday, Jun 19, 1834
  Sunday, Jan 31, 1892

• Dwight D. Eisenhower

  34Th U.s. President

  Tuesday, Oct 14, 1890
  Friday, Mar 28, 1969

• George Orwell

  Novelist

  Thursday, Jun 25, 1903
  Saturday, Jan 21, 1950

• W. Edwards Deming

  Statistician

  Sunday, Oct 14, 1900
  Monday, Dec 20, 1993

• Deepak Chopra

  Author

  Wednesday, Oct 22, 1947
  

• Friedrich Nietzsche

  Philologist

  Tuesday, Oct 15, 1844
  Saturday, Aug 25, 1900

• Vincent Van Gogh

  Painter

  Wednesday, Mar 30, 1853
  Tuesday, Jul 29, 1890

• Kim Kardashian

  Television Personality

  Tuesday, Oct 21, 1980
  

• Yogi Berra

  Baseball Manager

  Tuesday, May 12, 1925
  Tuesday, Sep 22, 2015

• Marcus Aurelius

  Roman Emperor

  Saturday, Apr 26, 0121
  Friday, Mar 17, 0180