Thomas Carlyle (4 December 1795 – 5 February 1881) was a British historian, satirical writer, essayist, translator, philosopher, mathematician, and teacher. In his book On Heroes, Hero-Worship, and The Heroic in History (1841), he argued that the actions of the "Great Man" play a key role in history, claiming that "the history of the world is but the biography of great men".