A unified theory would put us at the doorstep of a vast universe of things that we could finally explore with precision.

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?

People often think I'm a faker, but I'm usually honest, in a certain way--in such a way that often nobody believes me!

You do realize as you grow older that almost nobody knows what they are talking about.

Don't let what you fear stop you from pursuing it. For the most part, what you fear doesn't even know that you are afraid of it.

There is nothing to fear but to fear the fear itself

I kept thinking my father would come back, But he never did.

The issue is not that morals be applied to public policy, it's that conservatives bring public policy to spheres of our lives where it should not enter.

Do we wish men to be virtuous? Then let us begin by making them love their country.

One way to remain unfinished is to stop. the other is to go on.

When trying a case [the famous judge] L. Cassius never failed to inquire "Who gained by it?" Man's character is such that no one undertakes crimes without hope of gain.

The end of the world will be legal.