It is important to realize that in physics today, we have no knowledge of what energy is

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!

But what is the point of buying vegetables in plastic bags? Everything from the supermarket smells of plastic. Everything from the market smells like it’s supposed to.

Listening is not merely not talking, though even that is beyond most of our powers; it means taking a vigorous, human interest in what is being told us.

I'm unqualified for anything else. I'm barely qualified for this.

Today's headlines and history's judgment are rarely the same. If you are too attentive to the former, you will most certainly not do the hard work of securing the latter.

In the early days, I had very little idea about arrangements, and I wrote songs a little flat, as it were, just on an acoustic guitar. They didn't really have quite enough nuance.

The past is not dead; it is not even past. People live on inner time; the moment in which a decisive thought or feeling takes place can be at any time. Timeless feelings are common to all of us.

I never thought that people my own age could die, let alone be murdered. Things like that didn't happen in 1955. The suburbs were a safe place, where nobody even locked their doors.

I'm a big proponent of monogamous relationships regardless of sexuality, and I'm proud of how the nation is steering toward that.

History is a pathetic junkyard of broken treaties.

I've been allowed to develop my own character, which I'm still working on.