“The advancement and diffusion of knowledge is the only guardian of true liberty.” 
― James Madison

Born on March 16, 1751 in Port Conway, Virginia, James Madison served as the fourth President of the United States (18091817) and is considered one of the Founding Fathers of the United States. He was the principal author of the United States Constitution, and is often called the "Father of the Constitution." As Jefferson's Secretary of State, Madison supervised the Louisiana Purchase.