Success in creating AI would be the biggest event in human history. Unfortunately, it might also be the last, unless we learn how to avoid the risks.

I don't think the human race will survive the next thousand years, unless we spread into space.

We are all different. There is no such thing as a standard or run-of-the-mill human being, but we share the same human spirit.

Human history in essence is the history of ideas.

I put a lot of effort into writing A Briefer History at a time when I was critically ill with pneumonia because I think that it's important for scientists to explain their work, particularly in cosmology. This now answers many questions once asked of religion.

I believe everyone should have a broad picture of how the universe operates and our place in it. It is a basic human desire. And it also puts our worries in perspective.