All knowledge that is not the real product of observation, or of consequences deduced from observation, is entirely groundless and illusory.

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Top Authors

• Billy Graham

  Professional Wrestler

  Monday, Jun 07, 1943
  

• Heraclitus

  Philosopher

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

• Robin Williams

  Actor

  Saturday, Jul 21, 1951
  Monday, Aug 11, 2014

• Ralph Waldo Emerson

  Essayist

  Wednesday, May 25, 1803
  Thursday, Apr 27, 1882

• William Blake

  Poet

  Monday, Nov 28, 1757
  Sunday, Aug 12, 1827

• Thomas Jefferson

  3Rd US President

  Saturday, Apr 13, 1743
  Tuesday, Jul 04, 1826

• Chanakya

  Teacher

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

• Tyler, The Creator

  Rapper

  Wednesday, Mar 06, 1991
  

• Muhammad Ali

  Professional Boxer

  Saturday, Jan 17, 1942
  Friday, Jun 03, 2016

• Peter Drucker

  Author

  Friday, Nov 19, 1909
  Friday, Nov 11, 2005

• Dalai Lama

  Saturday, Jul 06, 1935
  

• Martin Luther King, Jr.

  Civil Rights Activist

  Tuesday, Jan 15, 1929
  Thursday, Apr 04, 1968

• George Orwell

  Novelist

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

• Isaac Newton

  Physicist

  Sunday, Jan 04, 1643
  Monday, Mar 31, 1727

• Soren Kierkegaard

  Philosopher

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