“You never fail until you stop trying.”

Everything must be made as simple as possible. But not simpler.

You have to learn the rules of the game. And then you have to play better than anyone else.

If you want to live a happy life, tie it to a goal, not to people or objects.

The hardest thing in the world to understand is the income tax.

If we knew what it was we were doing, it would not be called research, would it?

Never memorize something that you can look up.

If you want your children to be intelligent, read them fairy tales. If you want them to be more intelligent, read them more fairy tales.

I speak to everyone in the same way, whether he is the garbage man or the president of the university

Any fool can know. The point is to understand.

There is no vaccine against stupidity.

I have no special talents. I am only passionately curious.

Don’t listen to the person who has the answers; listen to the person who has the questions.

Be a voice not an echo.

In the middle of difficulty lies opportunity.

If A is a success in life, then A equals x plus y plus z. Work is x; y is play; and z is keeping your mouth shut.

We dance for laughter, we dance for tears, we dance for madness, we dance for fears, we dance for hopes, we dance for screams, we are the dancers, we create the dreams.