"And I've always said, you know, that I don't respect people that don't proselytize. I don't respect that at all. If you believe that there's a heaven and hell, and people could be going to hell — or not getting eternal life, or whatever — and you think that, "Well, it's not really worth tellin' 'em this, because it would make it socially awkward", and atheists who think that people shouldn't proselytize, "Just leave me alone. Keep your religion to yourself"... How much do you have to hate somebody to not proselytize? How much do you have to hate somebody to believe that everlasting life is possible and not tell them that? I mean, if I believe, beyond a shadow of a doubt, that a truck was coming at you and you didn't believe it —that truck was bearing down on you — there's a certain point where I tackle you, and this is more important than that."

“There Is No God" on This I Believe”

“The question I get asked by religious people all the time is, without God, what’s to stop me from raping all I want? And my answer is: I do rape all I want. And the amount I want is zero. And I do murder all I want, and the amount I want is zero. The fact that these people think that if they didn’t have this person watching over them that they would go on killing, raping rampages is the most self-damning thing I can imagine. I don't want to do that. Right now, without any god, I don't want to jump across this table and strangle you. I have no desire to strangle you. I have no desire to flip you over and rape you.”

“Penn Jillette/The magician-comedian-writer's secrets revealed! – Slate, ۴ فوریه ۲۰۰۶”

“Penn's home "The Slammer”

“Rabbi Daniel Lapin: Here's a really blunt question: would the world be a better or a worse place if a billion Muslims became evangelical Christians tomorrow?”

“I can read ideas from all different people from all different cultures. Without God, we can agree on reality, and I can keep learning where I'm wrong. We can all keep adjusting, so we can really communicate. I don't travel in circles where people say, "I have faith, I believe this in my heart and nothing you can say or do can shake my faith." That's just a long-winded religious way to say, "shut up," or another two words that the FCC likes less.”