Science fiction is any idea that occurs in the head and doesn't exist yet, but soon will, and will change everything for everybody, and nothing will ever be the same again. As soon as you have an idea that changes some small part of the world you are writing science fiction. It is always the art of the possible, never the impossible.

That's the great secret of creativity. You treat ideas like cats: you make them follow you.

If you're living in your time, you cannot help but to write about the things that are important.

They walked still farther and the girl said, "Is it true that long ago firemen put fires out instead of going to start them?" No. Houses have always been fireproof, take my word for it." Strange. I heard once that a long time ago houses used to burn by accident and they needed firemen to stop the flames.

The father hesitated only a moment. He felt the vague pain in his chest. If I run, he thought, what will happen? Is Death important? No. Everything that happens before Death is what counts. And we've done fine tonight. Even Death can't spoil it.

Miraculously, smoke curled out of his own mouth, his nose, his ears, his eyes, as if his soul had been extinguished within his lungs at the very moment the sweet pumpkin gave up its incensed ghost.

They are so confident that they will run on forever. But they won't run on. They don't know that this is all one huge big blazing meteor that makes a pretty fire in space, but that some day it'll have to hit.