A myth or legend is simply not made up out of a vacuum. Nothing is--or can be. Somehow there is a kernel of truth behind it, however distorted that m….

My feeling is, quite simply, that if there is a God, He has done such a bad job that he isn't worth discussing..

Modern science fiction is the only form of literature that consistently considers the nature of the changes that face us..

It is well-known that the friend of a conqueror is but the last victim..

The age of the pulp magazine was the last in which youngsters, to get their primitive material, were forced to be literate..

Once you get it into your head that somebody is controlling events, you can interpret everything in that light and find no reasonable certainty anywh….

Scientists derive satisfaction from figuring out the puzzle. It's about the quest, not the grail..

Even as a youngster, though, I could not bring myself to believe that if knowledge presented danger, the solution was ignorance..

You can prove anything you want by coldly logical reason---if you pick the proper postulates..

You can't assert an answer just because it's not something else..

It is almost impossible to think of something no one has thought of before, but it is always possible to add different frills..

It took me thirty-six years; and, in some fifty stories, ranging in length from short-shorts to novels, I think I must have touched, in one way or an….

The true delight is in the finding out rather than in the knowing..

I'm gradually managing to cram my mind more and more full of things. I've got this beautiful mind and it's going to die, and it'll all be gone. And t….

After years of finding mathematics easy, I finally reached integral calculus and came up against a barrier. I realized that this was as far as I coul….

Human beings sometimes find a kind of pleasure in nursing painful emotions, in blaming themselves without reason or even against reason..

There is not a discovery in science, however revolutionary, however sparkling with insight, that does not arise out of what went before..

The human brain, then, is the most complicated organization of matter that we know..

I am an atheist, out and out. It took me a long time to say it..

Oh, for a pin that would puncture pretension!.

Every period of human development has had its own particular type of human conflict---its own variety of problem that, apparently, could be settled o….