Live as if you were to die tomorrow. Learn as if you were to live forever.

Remembering that I'll be dead soon is the most important tool I've ever encountered to help me make the big choices in life. Because almost everything — all external expectations, all pride, all fear of embarrassment or failure - these things just fall away in the face of death, leaving only what is truly important. Remembering that you are going to die is the best way I know to avoid the trap of thinking you have something to lose. You are already naked. There is no reason not to follow your heart.

A leader leads by example not by force.

I do not know with what weapons World War III will be fought, but World War IV will be fought with sticks and stones. Letter to Harry S. Truman.

If you spend too much time thinking about a thing, you'll never get it done.

For instance, on the planet Earth, man had always assumed that he was more intelligent than dolphins because he had achieved so much - the wheel, New York, wars and so on - whilst all the dolphins had ever done was muck about in the water having a good time. But conversely, the dolphins had always believed that they were far more intelligent than man - for precisely the same reasons.

"I'd far rather be happy than right any day." Slartibartfast

Change before you have to.

You can't be wise and in love at the same time.

Marvin: "I am at a rough estimate thirty billion times more intelligent than you. Let me give you an example. Think of a number, any number."
Zem: "Er, five."
Marvin: "Wrong. You see?"

Religion is regarded by the common people as true, by the wise as false, and by rulers as useful.

Now I want you to remember that no bastard ever won a war by dying for his country. He won it by making the other poor dumb bastard die for his country. (June, 1944)

DON'T PANIC.

What's money? A man is a success if he gets up in the morning and goes to bed at night and in between does what he wants to do.

May God have mercy upon my enemies, because I sure as hell won't.