Whether the authorities be invaders or merely local tyrants, the effect of such [gun control] laws is to place the individual at the mercy of the state, unable to resist.

Spacemen die if they stay in one place.

Most gods have the manners and morals of a spoiled child.

Behind every mystery lies another mystery.

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.

when faced with a problem you do not understand, do any part of it you do understand, then look at it again.

The Stone trembled and threw herself outward bound, toward Saturn. In her train followed hundreds and thousands and hundreds of thousands of thousands of restless, rolling Stones . . . to Saturn . . . to Uranus, to Pluto . . . rolling on out to the stars . . . outward bound to the ends of the Universe.