My mom says: 'Why aren't you a doctor?' and I'm like, 'I am a doctor!' and she's all, 'No, I mean a real doctor.' She reads my books, but she says they give her a headache.

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?

History written in pencil is easily erased, but crayon is forever.

Soul mate love transcends beyond the ethereal plane.

A good leader is known by ‘his qualities’ not ‘his authorities’.

We say: mad with joy. We should say: wise with grief.

I base all of my relationships on trust, and I try to prove that trust to begin with, and so there isn't any question.

You have to have courage to stand up to your critics.

Dating is pressure and tension. What is a date, really, but a job interview that lasts all night?

When your self and your life belong to your being, your self opens, your life opens, your being comes in, and it will have everything. It is the single greatest turning point in your life.

I will be a commodity, and I will be in demand and valuable.

The only real help is self-help. Anything else is just designed to get you to the point where you can help yourself.