He [Democritus] is probably best known for two of the most scientifically intuitive quotes ever uttered by an ancient: 'Nothing exists except atoms and space, everything else is opinion'.

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.

Truth is simple, requiring neither study nor art.

Take short walks in the park down a happy trail.

The great mass of our citizens require only to understand matters rightly, to form right decisions.

My immediate family is real close-knit.

I tell stories to music and, thank God, in tune.

The biggest challenge you have is to challenge your own self doubt and your laziness. It is your self doubt and your laziness that defines and limit who you are.

Work made me crazy. I was tough to get along with.

I've always loved playing in bands where there's like three or four people and we're all throwing out ideas and coming together to make an album.

Before you judge someone, walk a mile in his shoes.

I figured I would shoot the bullets out of my nostrils, so I left [the gun] upstairs.