Energy is a very subtle concept. It is very, very difficult to get right.

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!

Every unknown is a beginning'.

The more corrupt the state the more laws.

I am primarily a loner. I don't go to clubs. I don't hang out with people. I don't know many people. It's just the way it ended up. It's not a sob story; it's fine for me.

And it is not our part here to take thought only for a season, or for a few lives of Men, or for a passing age of the world.

One of the principal qualities that you need as national security adviser is trust, the trust of the president. And that depends on truth and it depends on honesty.

I was raised by somebody with the perception of trying to allow me the space and show me the importance of knowing who I was and figuring out who I was and appreciating who I was.

It is the end that crowns us, not the fight.

Through faithful practice, layer after layer of the mind opens before us, and each reveals new facts to us.

He who cures a disease may be the skillfullest, but he that prevents it is the safest physician.

Unless you look like Brad Pitt, it's really hard to have full control of your character.