"With or without religion, you would have good people doing good things and evil people doing evil things. But for good people to do evil things, that takes religion."
"What can be asserted without proof can be dismissed without proof."
"The way to see by faith is to shut the eye of reason"
"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."
"Religion is regarded by the common people as true, by the wise as false, and by the rulers as useful."
"Where knowledge ends, religion begins."
"Properly read, the Bible is the most potent force for atheism ever conceived."