String theory envisions a multiverse in which our universe is one slice of bread in a big cosmic loaf. The other slices would be displaced from ours in some extra dimension of space.

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?

Whoever says that God is not great, surely hasn't called upon His Mighty name long enough to receive His heavenly blessings.

Through the darkest paths, you can reach the brightest heavens and this marvellous possibility will keep you full of life even in the middle of most horrible utter darknesss!

I don't believe in welfare.

The poet who does not revere his art, and believe in its sovereignty, is not born to wear the purple.

Monotheism is easily the greatest disaster to befall the human race.

I have a dad-ager. My dad is really good at the business end of things. But it's really a family affair. My mother handles all my social media stuff - Facebook, Twitter, e-mails, that kind of thing.

Took you long enough!,' she said, and planted a kiss on his lips.

In films, people sometimes forget and concentrate on the fight itself, which is great, but the 15 minutes that come beforehand are equally as breathtaking.

Tomorrow is for losers and dreamers

Think not those faithful who praise all thy words and actions, but those who kindly reprove thy faults.