“Today I found yet more evidence that I’m a lunatic. The proof came in a package in the mail. The sender? Myself. The evidence? Tampered with.”

“I have tried, of course, to be faithful to the evidence. Yet evidence is not truth. It is only evident.”

“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.”

“Success is no proof of virtue. In the case of a book, quick acclaim is presumptive evidence of a lack of substance and originality.”

“My view is that if there is no evidence for it, then forget about it. An agnostic is somebody who doesn’t believe in something until there is evidence for it, so I’m agnostic.”

“An atheist doesn't have to be someone who thinks he has a proof that there can't be a god. He only has to be someone who believes that the evidence on the God question is at a similar level to the evidence on the werewolf question.”