We have found it of paramount importance that in order to progress, we must recognize our ignorance and leave room for doubt.

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!

Between men and women there is no friendship possible. There is passion, enmity, worship, love, but no friendship.

Love is a diseases which makes the mind stop functioning and the heart beating faster.

There are an awful lot of skinny people in the cemetery.

Schoolteachers are not fully appreciated by parents until it rains all day Saturday.

When people ask, Do you like children? I always say, I like some children, yes. Some children I don't like.

I have the same problem as Edward Furlong. I'm so thin!

You want to know what I truly look like? I'll help you out. Find yourself a mirror while I continue.

Only a man who is happy can create happiness in others.

I can't go any place without going to museums. It's very important for me.

There is a certain flimsiness of poetry which seems expedient in a song.