Because scientists know that all human beings do not age at the same rate, biological age is measured by how well one's physiological systems are functioning.

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• Albert Camus

  Author

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

• John Keats

  Poet

  Saturday, Oct 31, 1795
  Friday, Feb 23, 1821

• George Carlin

  Comedian

  Wednesday, May 12, 1937
  Sunday, Jun 22, 2008

• Ronald Reagan

  40Th US President

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

• Oprah Winfrey

  Media Proprietor

  Friday, Jan 29, 1954
  

• Francis Of Assisi

  Saint

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

• Kim Kardashian

  Television Personality

  Tuesday, Oct 21, 1980
  

• Martin Luther King, Jr.

  Civil Rights Activist

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

• Isaac Newton

  Physicist

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

• Friedrich Nietzsche

  Philologist

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

• Winston Churchill

  Former Prime Minister Of The United Kingdom

  Monday, Nov 30, 1874
  Sunday, Jan 24, 1965

• Saint Augustine

  Saint

  Saturday, Nov 13, 0354
  Wednesday, Aug 28, 0430

• Thomas Jefferson

  3Rd US President

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

• Yogi Berra

  Baseball Manager

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

• Khalil Gibran

  Poet

  Saturday, Jan 06, 1883
  Friday, Apr 10, 1931