Work as hard and as much as you want to on the things you like to do the best.

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!

Independence is paramount and freedom holds a lot of new possibilities, if all the chances are given at the right time.

Pretension is a poor joke that you play on yourself. Snap out of it. Recognise your strengths, work on your weaknesses. Real achievement is liking what you see in the mirror every morning.

All Iraqis can unite to defeat terrorism and can unite to rebuild the country.

I'm from a big family. I've got 10 nieces and nephews.

What is light without dark? Right without left? What is goodness without the option to be evil?

Onscreen, Foaly rubbed his eyelids with his index fingers. "Yeah, yeah. Here we go. Captain Short goes rogue once more. Hands up who's surprised. Anyone?

Wouldn't it be lovely if death gave us a day's notice so giants like George Michael could see how much they were revered and adored.

Who is more in touch with the problems of this country? One of those guys who goes off to Oxford or to University of Yale, or someone who has lived in buses, in the Metro, in the street?

The great thing about the dead, they make space.

The world seemed to me fine because you were in it, and goodness more real because you lived.