Our technology, our machines, is part of our humanity. We created them to extend ourselves, and that is what is unique about human beings.

We only have to capture 1/10,000th of the solar energy landing on earth to completely satisfy all our energy needs.

As you go out to the 2040s, now the bulk of our thinking is out in the cloud. The biological portion of our brain didn't go away but the nonbiological portion will be much more powerful. And it will be uploaded automatically the way we back up everything now that's digital.

I do have to pick my priorities. Nobody can do everything.

The fate of the universe is a decision yet to be made, one which we will intelligently consider when the time is right.

Does God exist? Well, I would say, 'not yet'.

When I was a student at MIT, we all shared one computer and it took up a whole building. The computer in your cell phone today is a million times cheaper and a thousand times more powerful. What now fits in your pocket 25 years from now will fit into a blood cell and will again be millions of times more cost effective.