“I believe in evolution, scientific inquiry, and global warming; I believe in free speech, whether politically correct or politically incorrect, and I am suspicious of using government to impose anybody's religious beliefs -including my own- on nonbelievers.”

“I believe that my theory is correct; for whatever be the question upon which I am arguing, whether it be religious, philosophical, political, or economical; whether it affects well-being, morality, equality, right, justice, progress, responsibility, property, labor, exchange, capital, wages, taxes, population, credit, or Government; at whatever point of the scientific horizon I start from, I invariably come to the same thing—the solution of the social problem is in liberty.”

“Everyone believes in sin, the people who charge their peers with political incorrectness and the people who regard political correctness as the bogey of a little mind. What everyone does not believe in, as nearly as I can tell, is forgiveness.”

“...evolution is not a religious tenet, to which one swears allegiance or belief as a matter of faith.. It is a factual reality of the empirical world. Just as one would not say 'I believe in gravity," one should not proclaim 'I believe in evolution.”

“When suave politeness, tempering bigot zeal, corrected 'I believe' to 'one does feel'. ”

“I believe absolutely in my own free will and my own power to accomplish - and that is the belief that moves mountains. ”