Children and barbarians have clear ideas of justice due to them, but no idea at all of justice due from them.

The most difficult of enterprises is to secure the cooperation of others in enterprises those others did not think of first.

I've never noticed that being nonsensical keeps things from happening. Don't you ever read about politics?

No man can be fully efficient if he expects praise or appreciation for what he does.

It was a symptom of the insanity of human beings in a cosmos obviously designed for them to live in, but which they industriously prepare to make unlivable.

Facts are facts! And if they're impossible, they're still facts!

Adventure is the point where you toss your life on the scales of chance and wait for the pointer to stop.