“The only thing that interferes with my learning is my education.”

Peace cannot be kept by force; it can only be achieved by understanding.

Three great forces rule the world: stupidity, fear and greed.

Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.

Blind belief in authority is the greatest enemy of truth.

Learn from yesterday, live for today, hope for tomorrow.

Gravitation is not responsible for people falling in love.

When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That’s relativity.

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

When you trip over love, it is easy to get up. But when you fall in love, it is impossible to stand again.

Creativity is intelligence having fun.

What is right is not always popular and what is popular is not always right.

The only thing more dangerous than ignorance is arrogance.

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.