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.

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

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.

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.

The real goal of physics is to come up with an equation that could explain the universe but still be small enough to fit on a T-shirt

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