There's a picture of my dorm room in the college yearbook as the most messy, most disgusting room on the Harvard campus, where I was an undergraduate.

Sometimes attaining the deepest familiarity with a question is our best substitute for actually having the answer.

Science is the process that takes us from confusion to understanding.

When kids look up to great scientists the way they do to great musicians and actors, civilization will jump to the next level

Exploring the unknown requires tolerating uncertainty.

We're on this planet for the briefest of moments in cosmic terms, and I want to spend that time thinking about what I consider the deepest questions.

Intelligence is the ability to take in information from the world and to find patterns in that information that allow you to organize your perceptions and understand the external world.

I was holding [my four-year-old daughter] and I said, 'Sophia, I love you more than anything in the universe.' And she turned to me and said, 'Daddy, universe or multiverse?'

Free will is the sensation of making a choice. The sensation is real, but the choice seems illusory. Laws of physics determine the future.

All you are is a bag of particles acting out the laws of physics. That to me is pretty clear.

Physics grapples with the largest questions the universe presents. Where did the totality of reality come from? Did time have a beginning?

I sometimes wonder how many beautiful black sweaters have been knit from my wool.

A man thinks all dust stays outdoors.

Teenage girls read in packs. It's true today, and it was true when I was a teen growing up in a small town in northeast Oklahoma.

It's not easy for a mother and son to sing a duet. You can't just sing about anything.

If you speak your mind and if it is true what you're saying, then I think the integrity of what you're saying carries through.

If all I cared about was me, I could make a million. And that's what they will never understand.

There's still so much more to do. I can't sit back and be complacent, and none of us should be. I get around now in a wheelchair, but I get around.

Man in his effort to pray and receive guidance actually enhances his separation from who he really is and what he is reaching for. In time, you have all answers to all questions.

It's important to always say thank you to your BFF.

If a man deliberately abstains from wine to such an extent that he does serious harm to his nature, he will not be free from blame.