It would seem from this fact, that man is naturally a wild animal, and that when taken from the woods, he is never happy in his natural state, 'till he returns to them again.

As an Enlightenment intellectual he was committed to organizing all medical knowledge around explanatory theories rather than rely on empirical methods. December 24 1745] – April 19 1813) was a Founding Father of the United States. He signed the Declaration of Independence and was a leader in Pennsylvania's ratification the Constitution in 1788.