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

I think science and religion should be separate.

When I listen to the public debates about climate change, I am impressed by the enormous gaps in our knowledge, the sparseness of our observations and the superficiality of our theories.

If you're in the business world, that's what's expected: You should go bust and then start again on something else. So it's a much more relaxed kind of a culture. It's also competitive, but not in such a vicious way. I think the academic world is actually much more destructive of young people.

No matter how far we go into the future, there will always be new things happening, new information coming in, new worlds to explore, a constantly expanding domain of life, consciousness, and memory.

Of course, long-distance running has to do with the fact that we're hunters.

Technology without morality is barbarous; morality without technology is impotent.