Man is not a rational animal, he is a rationalizing animal.

Working because you want to is the best sort of play.

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.

I believe in the honest craft of workmen.

Like every living thing its prime characteristic is a blind, unreasoned instinct to survive.

When a place gets crowded enough to require ID's, social collapse is not far away. It is time to go elsewhere. The best thing about space travel is that it made it possible to go elsewhere.

Then I glanced at the ring on my finger. The Snake That Eats Its Own Tail, Forever and Ever. I know where I came from—but where did all you zombies come from? I felt a headache coming on, but a headache powder is one thing I do not take. I did once—and you all went away. So I crawled into bed and whistled out the light. You aren’t really there at all. There isn’t anybody but me—Jane—here alone in the dark. I miss you dreadfully!