Thomas Jefferson, scientist, statesman, and 3rd President of the U.S. (1743-1826):

American revolutionary leader, scientist, skeptic, political philosopher, and third president of the United States. The freethinker Jefferson expressed exponents of the Enlightenment that emphasized human reason, science, and education. He established the University of Virginia and authored the Declaration of Independence, and the Statute of Virginia for Religious Freedom.

Jefferson's personal Letters click here.