One thing scientists do is to find order among a large number of facts, and one way to do that across fields as diverse as biology, geology, physics and astronomy is through classification.

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Top Authors

• Henry David Thoreau

  Author

  Saturday, Jul 12, 1817
  Tuesday, May 06, 1862

• Jean De La Bruyere

  Wednesday, Aug 16, 1645
  Thursday, May 10, 1696

• Mahatma Gandhi

  Civil Rights Leader

  Saturday, Oct 02, 1869
  Friday, Jan 30, 1948

• John Muir

  Author

  Saturday, Apr 21, 1838
  Thursday, Dec 24, 1914

• Steven Wright

  Comedian

  Tuesday, Dec 06, 1955
  

• Soren Kierkegaard

  Philosopher

  Wednesday, May 05, 1813
  Sunday, Nov 11, 1855

• Benjamin Franklin

  Founding Father Of The United States

  Sunday, Jan 17, 1706
  Saturday, Apr 17, 1790

• Ronald Reagan

  40Th US President

  Monday, Feb 06, 1911
  Saturday, Jun 05, 2004

• Abraham Lincoln

  16Th U.S. President

  Sunday, Feb 12, 1809
  Saturday, Apr 15, 1865

• Billy Graham

  Professional Wrestler

  Monday, Jun 07, 1943
  

• Plato

  Philosopher

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

• Aldous Huxley

  Writer

  Thursday, Jul 26, 1894
  Friday, Nov 22, 1963

• Stephen Covey

  Author

  Monday, Oct 24, 1932
  Monday, Jul 16, 2012

• Francis Of Assisi

  Saint

  Thursday, Jun 24, 1182
  Saturday, Oct 03, 1226

• Napoleon Bonaparte

  Military Commander

  Tuesday, Aug 15, 1769
  Saturday, May 05, 1821