They just hate it when people make love. And then they'll go to a fistfight where somebody's really hurt and all covered with bloodand they'll just love that. Or a war and stuff like that. They're all mixed up and they're trying to take it out on you so you get mixed up too.

To live only for some future goal is shallow. It's the sides of the mountain that sustain life, not the top.

If you don't generalize you don't philosophize.

A person isn't considered insane if there are a number of people who believe the same way. Insanity isn't supposed to be a communicable disease. If one other person starts to believe him, or maybe two or three, then it's a religion.

The real University... has no specific location. It owns no property, pays no salaries, and receives no material dues... The real University is a state of mind. It is that great heritage of rational thought that has been brought down to us through the centuries.

The ultimate test's always your own serenity. If you don't have this when you start and maintain it while you're working you're likely to build your personal problems right into the machine itself.

A motorcycle functions entirely in accordance with the laws of reason, and a study of the art of motorcycle maintenance is really a miniature study of the art of rationality itself.