If you can’t explain it to a six year old, you don’t understand it yourself.

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

Common sense is the collection of prejudices acquired by age 18.

Common sense is the collection of prejudices acquired by age 18.

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

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

Coincidence is God’s way of remaining anonymous.

I never think of the future – it comes soon enough.

If the facts don’t fit the theory, change the facts.

Weakness of attitude becomes weakness of character.

Information is not knowledge.

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

Make everything as simple as possible, but not simpler.

I want to know God’s thoughts; the rest are details.

At any rate, I am convinced that He does not play dice.

I lived in that solitude which is painful in youth, but delicious in maturity.

Creativity is intelligence having fun.

It’s not that I’m so smart, it’s just that I stay with problems longer.

Any fool can know. The point is to understand.

I choose my friends for their good looks, my acquaintances for their good characters, and my enemies for their good intellects.

Beauty is a radiance that originates from within and comes from inner security and strong character.