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

If you are going through hell, keep going.

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

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

The secret to creativity is knowing how to hide your sources.

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.

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

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

The United States invariably does the right thing, after having exhausted every other alternative.

Suppose you were an idiot. And suppose you were a member of Congress. But I repeat myself.