When we benefit from CT scanners, M.R.I. devices, pacemakers and arterial stents, we can immediately appreciate how science affects the quality of our lives.

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?

you can, you should, and if you’re brave enough to start, you will.

In the United States, people don't revolt in order to obtain freedom, but continue denying it to others.

All there is to do, right at this very moment, is to breathe in, breathe out, and kiss the joy as it flies.

Well, I always hope that I'm a role model.

[Bob] Dylan, like Johnny Cash and only a handful of others, simultaneously embodies the American dream and the harsh wake-up call that comes after it.

There are things that have to be forgotten if you want to go on living.

Consider surgeons and their work. It's unthinkable to put your hands in the warm blood of another human's gut. Even with rubber gloves on. Who'd want to do that? But surgeons get over it.

It is not enough to deface the Mona Lisa because that does not kill the Mona Lisa. All art of the past must be destroyed.

With every choice you risk the life you would have had; with every decision, you lose it.

Romance without finance is a nuisance. Few men value free merchandise. Let the chippies fall where they may.