Unsolved problems, that's one of the great signs of progress in my opinion.

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• Peter Drucker

  Author

  Friday, Nov 19, 1909
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• Sun Tzu

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  Thursday, Jan 01, 1970
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• Paulo Coelho

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  Sunday, Aug 24, 1947
  

• Stephen Hawking

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  Thursday, Jan 08, 1942
  

• Napoleon Hill

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  Friday, Oct 26, 1883
  Sunday, Nov 08, 1970

• Albert Camus

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  Friday, Nov 07, 1913
  Monday, Jan 04, 1960

• John C. Maxwell

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  Thursday, Feb 20, 1947
  

• Johann Wolfgang Von Goethe

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  Thursday, Mar 22, 1832

• Elon Musk

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• Kobe Bryant

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• Kanye West

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  Thursday, Jun 04, 2015

• Thomas Aquinas

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• Samuel Taylor Coleridge

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  Wednesday, Oct 21, 1772
  Friday, Jul 25, 1834

• Joe Biden

  Vice President Of The United States

  Friday, Nov 20, 1942
  

• John F. Kennedy

  35Th U.s. President

  Tuesday, May 29, 1917
  Friday, Nov 22, 1963