Philosophers say a great deal about what is absolutely necessary for science, and it is always, so far as one can see, rather naive, and probably wrong.

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!

It is not about doing what we feel like. It is about doing what God says.

It's a cruel and random world, but the chaos is all so beautiful.

Donald Trump and Hillary Clinton are on entirely different levels.

[Pope Francis] is 78 years old and knows that his will be a short pontificate.

I've learned a lot about genuinely not caring what strangers think about me. It's very liberating.

The American people are not just being taxed to death; they're being taxed after death. But, no one should have to sell the life's work of a parent or a loved one just to pay the federal government.

I think her flaws make me love her even more. She's not perfect, but she's perfect to me

I don't believe in people who think that clothes are not important.

I'm going down 2 Alphabet Street I'm gonna crown the first girl that I meet I'm gonna talk so sexy She'll want me from my head 2 my feet.

I've never pursued a role. I always hear stories about actors going after parts and I'm, like, 'How do they do that?' It seems so weird. It seems like a total myth or something.