Mathematics is a language plus reasoning. It's like a language plus logic. Mathematics is a tool for reasoning.

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!

Fear, when blended with failure, distills into a deadly brew.

Great writers experience their dreams. They put them on paper, where others can read about them.

Pete's a good guy.""He just slept with my mother!""I didn't say he was perfect.

We scarcely know how much of our pleasure and interest in life comes to us through our eyes until we have to do without them

From pitch perspective, the more you wear your idea, the more it fits you and your comfortable with it, the easier it is for somebody like me to say tell me more.

When people shake their heads because we are living in a restless age, ask them how they would like to life in a stationary one, and do without change

Death, in its silent sure march is fast gathering those whom I have longest loved, so that when he shall knock at my door, I will more willingly follow.

I've stolen a couple of hearts and they are in my private collection!

[Identity liberalism] is about recognition and self-definition. It's narcissistic. It's isolating. It looks within. And it also makes two contradictory claims on people.

The way you give love is the most profoundly human part of you. When people say it's ugly or a perversion or an abomination, they're attacking the center of your being.