Have no respect whatsoever for authority; forget who said it and instead look what he starts with, where he ends up, and ask yourself, "Is it reasonable?"

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!

One of the things about equality is not just that you be treated equally to a man, but that you treat yourself equally to the way you treat a man.

Even though I am a mathematician, I look at [fetal development] with marvel: How do these instruction sets not make mistakes as they build what is us?

In politics, my dear fellow, you know, as well as I do, there are no men, but ideas — no feelings, but interests; in politics we do not kill a man, we only remove an obstacle, that is all.

I'd just like to say that I have a personal disgust for small dogs, like poodles. I have some serious physical problems with them. Everything about them means I must kill them. I must.

Confidence is the feeling we have before knowing all the facts

Lord knows, I never want to waste any more of my time in mirrors.

His wife's a brand of Christian that forbids a gathering that involves young women dancing in the streets but not races where men die

Passion is what you would do if you got to choose. It's what you think about doing in the privacy of your own mind, without ear of dismissal or mockery.

Our life-transformation is in exact proportion to the amount of truth we can take without running away.

I have never been one of those who cares about happiness. Happiness is a strange notion. I am just not made for it. It has never been a goal of mine; I do not think in those terms.