A clever person solves a problem. A wise person avoids it.

I like your Christ. I do not like your Christians. Your Christians are so unlike your Christ.

Put your hand on a hot stove for a minute, and it seems like an hour. Sit with a pretty girl for an hour, and it seems like a minute. That's relativity.

Speak only if it improves upon the silence.

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

Coincidence is God's way of remaining anonymous.

Try to become not a man of success, but try rather to become a man of value.

Life is like riding a bicycle. To keep your balance you must keep moving.

The world is a dangerous place to live, not because of the people who are evil, but because of the people who don't do anything about it.

A leader leads by example not by force.

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.

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.

Success is going from failure to failure without a loss of enthusiasm.

He who is not contented with what he has, would not be contented with what he would like to have.

There are many causes I would die for. There is not a single cause I would kill for.

Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution.

I'm not an atheist and I don't think I can call myself a pantheist. We are in the position of a little child entering a huge library filled with books in many different languages. The child knows someone must have written those books. It does not know how. The child dimly suspects a mysterious order in the arrangement of the books but doesn't know what it is. That, it seems to me, is the attitude of even the most intelligent human being toward God.

Reality is merely an illusion, albeit a very persistent one.

Science without religion is lame, religion without science is blind.

You should be the change that you want to see in the world.

Computers are incredibly fast, accurate and stupid. Human beings are incredibly slow, inaccurate and brilliant. Together they are powerful beyond imagination.

An eye for an eye will make the whole world blind.

The search for truth is more precious than its possession.

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

First they ignore you, then they laugh at you, then they fight you, then you win.