There are tons more from James Madison, Ben Franklin, Thomas Paine, and so on. Consider this one from Jefferson:
"Shake off all the fears of servile prejudices, under which weak minds are servilely crouched. Fix reason firmly in her seat, and call on her tribunal for every fact, every opinion. Question with boldness even the existence of a God; because, if there be one, he must more approve of the homage of reason than that of blindfolded fear." --- Thomas Jefferson, letter to Peter Carr, Aug. 10, 1787
If that is not pure Enlightenment thinking, nothing is. Whether modern day fundamentalists like it or not, our founding fathers were deists, freemasons, and Enlightenment freethinkers.
As a Christian, I am a staunch defender of separation of church and state. I have no idea why fundamentalists would want to invite a government into their religion.