On this day, April 13, 1743, the 3rd U.S. president was born. He approved the Louisiana Purchase and commissioned Lewis and Clark to explore it. Best known for drafting the Declaration of Independence, he was also governor of Virginia. His name, Thomas Jefferson. Inscribed on the memorial in Washington, D.C., is Jefferson's statement: "Can the liberties of a nation be thought secure when we have removed their only firm basis, a conviction ... that these liberties are of the Gift of God ... not to be violated but with His wrath? ... I tremble for my country when I reflect that God is just; that His justice cannot sleep forever."