Who was the most influential thinker from the enlightenment?

In my opinion, john Locke was the most influential enlightenment thinker because of his opinions of people's freedoms and government's role in society. His take on the social-contract theory shaped our government and his ideals are reflected in the Declaration of Independence. He thought the government ruled by permission of the people, and if the government was intruding on our inalienable rights, (life,libery,property) then we have a right to overthrow or change the government.