I don't have to be good because they think I'm going to be good.

If you think you understand quantum mechanics, you don't understand quantum mechanics.

Our responsibility is to do what we can, learn what we can, improve the solutions, and pass them on.

It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it's wrong.

If you can't explain something to a first year student, then you haven't really understood .

God was invented to explain mystery. God is always invented to explain those things that you do not understand.

Nature uses only the longest threads to weave her patterns, so that each small piece of her fabric reveals the organization of the entire tapestry.

My rule is, when you are unhappy, think about it. But when you're happy, don't. Why spoil it? You're probably happy for some ridiculous reason and you'd just spoil it to know it.

Religion is a culture of faith; science is a culture of doubt.

The only way to deep happiness is to do something you love to the best of your ability

Einstein was a giant. His head was in the clouds, but his feet were on the ground. But those of us who are not that tall have to choose!

You've got to know what your magic is. How else will you fully share your gifts with others and enrich the world for these precious years that you live?

Entrepreneurship is where a noble cause meets the passion.

Mr. Thorton love Margaret! Why, Margraret would never think of him, I'm sure! Such a thing has never entered her head." "Entering her heart would do.

In light of 50 years of bondage of Eastern Europe, [invading the Soviet Union in 1948 to prevent it from acquiring nuclear weapons] was probably a reasonable thing to do.

The first thing you do is teach the person to feel that the vision is very important and nearly impossible. That draws out the drive in the winner.

Some people are proud of their humility.

If anything is worth doing, it is worth doing it badly.

My father was a doctor. He was just a great guy, a gentle humanist, and an old-fashioned GP. He'd get up at three in the morning to see patients in different areas if they needed him.

If you don't choose to do it in leadership time up front, you do it in crisis management time down the road.

Be proactive. Ask yourself, "Are my actions based on self-chosen values or on my moods, feelings and circumstances?"