While I am describing to you how Nature works, you won't understand why Nature works that way. But you see, nobody understands that.

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!

Today is the most beautiful day to begin the rest of your joyful life.

Give a man a proverb

I want to make sure that as president of the United States that I'm not asserting in some way that my decisions overrule the decisions of prosecutors who are there to uphold the law.

Do you think that people will obey the truth because it is true, unless they love it? No, they will not. Truth is obeyed when it is loved.

I am still fighting to make the world a better place and you can, too.

Scientists are always the ones who head into the ocean, but I want to take writers and politicians, people who can convey the beauty that is there and perhaps do something to take care of it.

I received a beautiful welcome to the world of music. I want to give something back to the younger generation.

For me, once I've worked on something and it's finished, it's like an ex-boyfriend: you don't go back to them.

The two worst strategic mistakes to make are acting prematurely and letting an opportunity slip.

I didn't invent hot water. But when I approach menswear, I do it in a very honest way. And my menswear and womenswear are very similar, in the sense that I put men in leggings and lace shirts.