Most women are damn fools and children. But they've got more range than we've got. The brave ones are braver, the good ones are better - and the vile ones are viler, for that matter.

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.

Nothing could go wrong because nothing had...I meant "nothing would." No - Then I quit trying to phrase it, realizing that if time travel ever became widespread, English grammar was going to have to add a whole new set of tenses to describe reflexive situations - conjugations that would make the French literary tenses and the Latin historical tenses look simple.

To be matter-of-fact about the world is to blunder into fantasy - and dull fantasy at that, as the real world is strange and wonderful.

An armed man need not fight.

- I'm so busy doing what I must do that I don't have time for what I ought to do... and I never get a chance to do what I want to do! - Son, that's universal. The way to keep that recipe from killing you is occasionally to do what you want to do anyhow.

When railroading time comes you can railroad—but not before.