The idea that there could be other universes out there is really one that stretches the mind in a great way.

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?

If the weight comes from bacon you can so deduct it off the scale total to get your true weight. #science

Lately, I couldn't remember those years, as if childhood was a movie I'd only seen the previews to.

Alone alone all all alone Alone on a wide wide sea.

In difficult times, it's so hard to look around and to see what to be grateful for.

Bush may be a strong leader in the war on terrorism, but on budget deficits he is missing-in-action.

We come from ruins, but we're not ruined.

Everything looks more beautiful in retrospect.

I often feel like books find us for reasons, and we read them when we need them the most.

Doubt, but still hate!

The starting point is always now. The end is up to you.