If my doctor told me I had only six minutes to live, I wouldn't brood. I'd type a little faster.

It was obvious that bigotry was never a one-way operation, that hatred bred hatred!

And above all things, never think that you're not good enough yourself. A man should never think that. My belief is that in life people will take you at your own reckoning.

Inspect every piece of pseudoscience and you will find a security blanket.

I expect death to be nothingness and, for removing me from all possible fears of death, I am thankful to atheism.

Why continue? Because we must. Because we have the call. Because it is nobler to fight for rationality without winning than to give up in the face of continued defeats. Because whatever true progress humanity makes is through the rationality of the occasional individual and because any one individual we may win for the cause may do more for humanity than a hundred thousand who hug their superstitions to their breast.

Individual science fiction stories may seem as trivial as ever to the blinder critics and philosophers of today - but the core of science fiction, its essence has become crucial to our salvation if we are to be saved at all.