A philosopher once said, 'It is necessary for the very existence of science that the same conditions always produce the same results.' Well, they don't!

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 like it. Knowing things about people. It makes you feel powerful.

Maybe I'm crying because I'm terrified that he's come here to do more damage, to reactivate what I feel only to let me down easy again, missionary style.

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

If the legislation helps people improve their lives, then that's great because that's the ultimate goal of all of this.

Can't we sleep ten minutes more? I was having a lovely dream about sneezing without covering my mouth, and giving everybody germs.

To rejoice in life, to find the world beautiful and delightful to live in, was a mark of the Greek spirit which distinguished it from all that had gone before. It is a vital distinction.

We have to struggle against the conservatives from all sides, not only the right-wingers, but also the left-wing conservatives who don't want to change anything.

We see nothing till we truly understand it.

I've found that film-making's not just a job, it becomes part of your whole life.

A dead man is the best fall guy in the world. He never talks back.