The British philosopher Bertrand Russell said that philosophy went downhill after Democritus and did not recover until the Renaissance.

Theorists write all the popular books on science: Heinz Pagels, Frank Wilczek, Stephen Hawking, Richard Feynman, et al. And why not? They have all that spare time.

Physics isn't a religion. If it were, we'd have a much easier time raising money.

The physicists defer only to mathematicians, and the mathematicians defer only to God.

I sometimes think about the tower at Pisa as the first particle accelerator, a (nearly) vertical linear accelerator that Galileo used in his studies.

Those who do not stop asking silly questions become scientists.

We hope to explain the entire universe in a single, simple formula that you can wear on your T-shirt.

Science should have no less lofty a goal. My ambition is to live to see all of physics reduced to a formula so elegant and simple that it will fit easily on the front of a T-shirt.

My children have often asked me why I never received a Nobel Prize. I used to tell them it was because the Nobel committee couldn’t make up its mind which of my projects to recognize.

I'm so old I can remember when the Dead Sea was only sick.

One of the major ingredients for professional success in science is luck. Without this, forget it.

The more one understands the world...the harder it is to obtain Buddhahood." Dakpo to Shan

Sanity is a sonnet with a strict meter and rhyme scheme-and my mind is free verse.

When theology recognizes one thing properly, it mis-recognizes something else all the more thoroughly.

Being able to draw means being able to put things in believable space. People who don't draw very well can't do that.

But I never worried about having a child in my 40s, which is unusual - normally, I'm the queen of worry.

There's no such thing as legacies. At least, there is a legacy, but I'll never see it.

The only reason to have a 300-foot-long boat is because they're bigger than 200-foot-long boats.

I like my life. I like my friends. I don't want to go anywhere else.

In a sense, Britain inadvertently, through its actions in Hong Kong, did more to reduce world poverty than all the aid programs that we've undertaken in the last century.

I will be brief. Your noble son is mad.