This is not very important what I'm doing. I'm just proving something.

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!

Of all this world's beauty and miracles, brilliance and simplicity-of all nature's graces-children are truly the most remarkable.

We travel to ancient times by reading history books.

You have to let your light shine.

Our mind is capable of passing beyond the dividing line we have drawn for it. Beyond the pairs of opposites of which the world consists, other, new insights begin.

I love what I do, and I never thought about doing anything else. I think my voice was bestowed upon me; it was a gift I was given. I just had to learn to understand how to use it.

When the earth is sick and polluted, human health is impossible.... To heal ourselves we must heal our planet, and to heal our planet we must heal ourselves.

If San Francisco is indeed a city of leaders, then I think we should lead, and if we don't want a chain store, then we should say so loudly.

Fear is isolating for those that fear. And I have come to believe that fear is a cruelty to those who are feared.

Society has been able to create refuges of every sort, for since it preferred to take love-life as an amusement, it also had to give it an easy form, cheap, safe, and sure, as public amusements are.

By all means break the rules, and break them beautifully, deliberately and well.