Thinking of the universe as a computer is controversial.

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.

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.

Indeed, as the above calculation indicates, to take full advantage of the memory space available, the ultimate laptop must turn all its matter into energy.

No one plows the field just by thinking about it.

One of these days the people of Louisiana are going to get good government - and they aren't going to like it.

This attempt to isolate cell constituents might have been a failure if they had been destroyed by the relative brutality of the technique employed. But this did not happen.

A sunny disposition is worth more than [a monetary] fortune. Young people should know that it can be cultivated; that the mind like the body can be moved from the shade into sunshine.

I'm much more of a realist. I'm really practical. I'm the kind of person that calls my business manager and says, OK, if it were all to end today, how many months do I have to live?

This unrequited love, to me it's nothing but a one-man cult/And cyanide in my styrofoam cup

being homosexual doesn't determine a man's whole character any more than being heterosexual does.

The snow and the storm destroy the flower; but its seed they cannot kill.

To be overcome with the ultimate goal often interferes with performance.

Don't use barbiturates before going on stage. And be honest.