The Earth is just one place of many that we could hang our hats.

As areas of knowledge grow, so too do the perimeters of ignorance.

One of the things that fascinates me most is when people are so charmed by the universe that it becomes part of their artistic output.

Kids are never the problem. They are born scientists. The problem is always the adults. They beat the curiosity out of kids. They outnumber kids. They vote. They wield resources. That's why my public focus is primarily adults.

When I wrestled, I would set aside the time to wrestle, so that in my mind it didn't interfere with my study time. If I'd say, "I'm going to study this many hours, then I'm going to go work out and wrestle," then when that time comes, you don't feel like you should be doing something else. That helped me psychologically. But otherwise? When I'm wrestling, I'm not studying the universe. And when I'm studying the universe, I'm not wrestling.

On some issues, I'm a staunch Conservative — like curtailing greenhouse gas emissions so that we can Conserve the environment.

I have yet to see a successful prediction about the physical world that was inferred or extrapolated from the content of any religions document.