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.

When I die I won't go to heaven or hell; there will just be nothingness.

It is not so much that I have confidence in scientists being right, but that I have so much in nonscientists being wrong.

When I sit down at the typewriter, I write. Someone once asked me if I had a fixed routine before I start, like setting up exercises, sharpening pencils, or having a drink of orange juice. I said, "No, the only thing I do before I start writing is to make sure that I'm close enough to the typewriter to reach the keys."

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

Democracy cannot survive overpopulation.

The essential building block is...the true love that is impossible to define for those who have never experienced it and unnecessary to define for those who have.