“What can be asserted without evidence can also be dismissed without evidence.”

“That which can be asserted without evidence, can be dismissed without evidence.”

“There can be no progress without head-on confrontation.”

“[E]xceptional claims demand exceptional evidence.”

“At the evident risk of seeming ridiculous, I want to begin by saying that I have tried for much of my life to write as if I was composing my sentences to be read posthumously. I hope this isn't too melodramatic or self-centred a way of saying that I attempt to write as if I did not care what reviewers said, what peers thought, or what prevailing opinions may be.”

“Although war can bring with it great enthusiasm and solidarity, it also brings the reaction to these things.”

“We keep on being told that religion, whatever its imperfections, at least instills morality. On every side, there is conclusive evidence that the contrary is the case and that faith causes people to be more mean, more selfish, and perhaps above all, more stupid.”