If you wanted to build the most powerful computer you could, you can't do better than including everything in the universe that's potentially available.

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 lost someone close to me once . . . Taught me to live in the moment. Life is short, you know?

I guess if you are making more money than your mom and dad, you can set your own boundaries.

You cannot change reality, but you can control the manner in which you look at things. Your attitude is under your own control. Weed out the negative and focus on the positive!

This great American institution [Boy Scouts of America] has come under attack from homosexual activists-who may well set their sights on your church next.

Christianity isn't looking for a rainbow. If it were... we'd pass out opium at services. We're trying to serve God, not be God.

My turn of mind is so given to taking things in the absurd point of view, that it breaks out in spite of me every now and then.

If one is honest there is no need to remember.

Stop worrying about growing old. And think about growing up.

In fact, I have a problem with too much money... I can't reinvest it fast enough, and because I reinvest it, more money comes in. Yes, the rich do get richer.

She who desires peace must see, suffer and be silent.