Another feature that everybody notices about the universe is that it's complex.

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.

In an English village, you turn over a stone and have no idea what will crawl out.Miss Marple

Well I think effects are tools

Joy, grief, desire or fear, whate'er the name The passion bears, its influence is the same; Where things exceed your hope or fall below, You stare, look blank, grow numb from top to toe.

I was a university professor, I could talk on and on and on. Give me a podium and you have to drag me off with a hook.

I'm the guy, I'm kind of like the, uh, Everyman, so I think people just relate to that.

Having both a pet and a book...absolute heaven.

The older I get, the less I remember.

The absence of Saddam is a huge weight off the Arab world.

Extreme busyness, whether at school or college, kirk or market, is a symptom of deficient vitality.

What we call imagination is actually the universal library of what's real. You couldn’t imagine it if it weren’t real somewhere, sometime.