I think that science fiction has a distinct therapeutic value because all of it has as its primary postulate that the world does change. I cannot overemphasize the importance of that idea.

Geniuses and supergeniuses always make their own rules about sex as on everything else; they do not accept the monkey customs of their lessers.

It was equally imperative that this chain of reactions should always tend to dampen, to die out. It must not build up, or the uranium mass would explode within a time interval too short to be measured by any means whatsoever. Nor would there be anyone left to measure it.

God split himself into a myriad parts that he might have friends. This may not be true, but it sounds good, and is no sillier than any other theology.

Anyone who clings to the historically untrue-and thoroughly immoral-doctrine that, 'violence never settles anything' I would advise to conjure the ghosts of Napoleon Bonaparte and the Duke of Wellington and let them debate it. The ghost of Hitler could referee, and the jury might well be the Dodo, the Great Auk and the Passenger Pigeon. Violence, naked force, has settled more issues in history than has any other factor, and the contrary opinion is wishful thinking at its worst. Breeds that forget this basic truth have always paid for it with their lives and freedom.

The ethics of sex is a thorny problem. Each of us is forced to grope for a solution he can live with - in the face of preposterous, unworkable, and evil code of so-called 'Morals.' Most of us know the code is wrong, almost everybody breaks it. But we pay Danegeld by feeling guilty and giving lip service. Willy-nilly, the code rides us, dead and stinking, an albatross around the neck.

Spacemen die if they stay in one place.