Science consists exactly of those forms of knowledge that can be verified and duplicated by anybody.

All physical systems can be thought of as registering and processing information, and how one wishes to define computation will determine your view of what computation consists of.

I have not proved that the universe is, in fact, a digital computer and that it's capable of performing universal computation, but it's plausible that it is.

One of the things that I've been doing recently in my scientific research is to ask this question: Is the universe actually capable of performing things like digital computations?

Computers are famous for being able to do complicated things starting from simple programs.

Nothing in life is certain except death, taxes, and the second law of thermodynamics.

The history of the universe is, in effect, a huge and ongoing quantum computation. The universe is a quantum computer.

Thinking of the universe as a computer is controversial.

There are considerable advantages to using many degrees of freedom to store information, stability and controllability being perhaps the most important.

Of course, not everybody's willing to go out and do the experiments, but for the people who are willing to go out and do that, - if the experiments don't work, then it means it's not science.

In order to figure out how to make atoms compute, you have to learn how to speak their language and to understand how they process information under normal circumstances.

I couldn't convince her that if I had a book with me, I wasn't lonely.

There is no utter truth or utter falsehood in this world. There is only mostly. Which part of the mostly you choose to accept, well, that much is up to you.

We have to adopt a wider perspective, and always find common things between the people of north, east, south, and west. Conflict comes from the basis of differencs.

God doesn't want your crises-mode promises.

I am not a pregnant working mother wronged.

I'm on so late I'm definitely the last seconds of anyone's attention. So I just want to give them something dumb to laugh at, so they go, 'That's funny,' then fall asleep.

I regret. I apologize. I blame myself. I continue as before.

I think Abraham Lincoln said believe nothing of what you hear and only half of what you see.

You can't afford the luxury of a negative thought

There is a similarity between juggling and composing on the typewriter. The trick is, when you spill something, make it look like a part of the act.