I think that what the machines can do, of course, is wonderful, but it's not the same as what the brain can do.

You ask: what is the meaning or purpose of life? I can only answer with another question: do you think we are wise enough to read God's mind?

The greatest unsolved mysteries are the mysteries of our existence as conscious beings in a small corner of a vast universe.

If you want to have a program for moving out into the universe, you have to think in centuries not in decades.

A good scientist is a person with original ideas. A good engineer is a person who makes a design that works with as few original ideas as possible. There are no prima donnas in engineering.

Technology must be guided and driven by ethics if it is to do more than provide new toys for the rich.

The idea that global warming is the most important problem facing the world is total nonsense and is doing a lot of harm.

Unfortunately the global warming hysteria, as I see it, is driven by politics more than by science.

In the end it is how you fight, as much as why you fight, that makes your cause good or bad.

So long as you have courage and a sense of humor, it is never too late to start life afresh.

Technology is a gift of God. After the gift of life it is perhaps the greatest of God's gifts. It is the mother of civilizations, of arts and of sciences.

I am six years old and instead of celebrating with birthday cakes, I chew on a piece of charcoal.

Just got back from a pleasure trip: I took my mother-in-law to the airport.

Somewhere in there the grace of a ballet dancer joins with the strength of an SAS squaddie, the dignity of an ancient kind, the nerve of a bomb disposal officer.

My books always make the best-seller lists in Wolf Hole, Arizona, and Hanksville, Utah.

We aren't the things we collect, acquire, read. We are, for as long as we are here, only love. The things we loved. The people we loved. And these, I think these really do live on.

Making fun of anyone's size, height, scarring, anything like that equals dumb.

I would say that if you don't feel like talking to the crowd something is wrong and if you force yourself to talk to them things will happen and to that extent things aren't choreographed.

I only read on my phone and the whole "let's see if we can get people to do it" idea seems less "wouldn't it be cool if we could get people to do it" and more "what else would people do."

There is part of us that stands in quiet witness to what we do, taking notes, waiting for a solitary moment to bring up the subject.

You know how to stop abortion? Require that each one occur with a gun.