Submitted without comment, except for one, but I mean, come on...
"Atheism is the noises reasonable people make in the presence of unjustified religious beliefs" --Sam Harris
"Reality is that which, when you stop believing in it, doesn't go away."
"Sometimes the appropriate response to reality is to go insane."
"A lot can be said for the infinite mercies of God, but the smarts of a good pharmacist, when you get down to it, is worth more."
--Philip K. Dick
"I am an atheist, out and out. It took me a long time to say it. I've been an atheist for years and years, but somehow I felt it was intellectually unrespectable to say one was an atheist, because it assumed knowledge that one didn't have. Somehow, it was better to say one was a humanist or an agnostic. I finally decided that I'm a creature of emotion as well as of reason. Emotionally, I am an atheist. I don't have the evidence to prove that God doesn't exist, but I so strongly suspect he doesn't that I don't want to waste my time."
"Violence is the last refuge of the incompetent."
"I believe in evidence. I believe in observation, measurement, and reasoning, confirmed by independent observers. I'll believe anything, no matter how wild and ridiculous, if there is evidence for it. The wilder and more ridiculous something is, however, the firmer and more solid the evidence will have to be."
"The true scientist... sometimes leaps to solutions where reason can follow only slowly; if he does not, his science suffers."
"If knowledge can create problems, it is not through ignorance that we can solve them."
--Isaac Asimov (wasn't originally going to use this many from him, but uh, who cares? It's Isaac freakin Asimov)
"If I were to give a prize for the single best idea anybody ever had, I'd give it to Darwin for the idea of natural selection – ahead of Newton, ahead of Einstein. Because his idea unites the two most disparate features of our universe: The world of purposeless, meaningless matter-in-motion, on the one side, and the world of meaning, and purpose, and design on the other. He understood that what he was proposing was a truly revolutionary idea."
--Daniel Dennet
"Isn't it enough to see that a garden is beautiful? Do you really have to believe there are fairies at the bottom of it?" --Douglas Adams