1,085 Quotes by Robert A. Heinlein

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.

Elephants aren't human but they are very nice people.

To get anywhere, or even to live a long time, a man has to guess, and guess right, over and over again, without enough data for a logical answer.

A slave cannot be freed, save he do it himself. Nor can you enslave a free man; the very most you can do is kill him!

Tilting at windmills hurts you more than the windmills.

Man can be chained, but he cannot be domesticated.

A brute kills for pleasure. A fool kills from hate.

Since when was an emotional argument won by logic?

A man who marries at my age isn't taking a wife, he's indenturing a nurse.