“Science is my territory, but science fiction is the landscape of my dreams.”

“Science fiction deals with improbable possibilities, fantasy with plausible impossibilities.”

The only way of discovering the limits of the possible is to venture a little way past them, into the impossible.

“Books are keys that open many doors”

Science fiction at its best should be crazy and dangerous, not sane and safe.

[Science fiction is] the attempt to deal rationally with alternate possibilities in a manner which will be entertaining.

In short, the straw of a manufactured realism with which the sf writer makes his particular literary bricks must be entirely convincing to the reader in it own right, or the whole story will lose its power to convince.

Do it for yourself. The universe will be around to collect its cut later.

At war or at peace, more people die of unenlightened self-interest than of any other disease.

“One of the things I’ve always liked about science fiction is the way it makes you think about things, and look at things from angles you’d never have thought about before.”

By and large, the kind of science fiction which makes tomorrow’s headlines as near as this morning’s coffee has enlarged popular awareness of the modern, miraculous world of science we live in. It has helped generations of young people feel at age with a changing world.

A common complaint about science fiction is that it promises more than our world’s humdrum reality ever delivers—a refrain summed up in the question: “Where’s my flying car?”