The idea of tiny changes cumulated over many steps is an immensely powerful idea, capable of explaining an enormous range of things that would be otherwise inexplicable.

Never say, and never take seriously anyone who says, 'I cannot believe that so-and-so could have evolved by gradual selection.' I have dubbed this kind of fallacy 'the Argument from Personal Incredulity.' Time and again, it has proven the prelude to an intellectual banana-skin experience.

Saddam Hussein's mind would have been a unique resource for historical, political and psychological research: a resource that is now forever unavailable to scholars... In a small way his execution represents a wanton and vandalistic destruction of important research data.

I'm fond of science fiction. But not all science fiction.

The fact that somebody does good doesn't make their beliefs true.

When we talk about genes for anything, like a gene for being gay or a gene for being aggressive or something of that sort, that a gene for anything may not have been a gene for that thing under different environmental conditions.

Sometimes in life it is a good idea to stop,sometimes it is a good idea to go on. The trick is to decide when to stop