People think I'm a Simpsons character.

What was God doing before the divine creation? Was he preparing hell for people who asked such questions?

I want to know why the universe exists, why there is something greater than nothing.

I don't think the human race will survive the next thousand years, unless we spread into space. There are too many accidents that can befall life on a single planet. But I'm an optimist. We will reach out to the stars.

There is nothing bigger or older than the universe.

Although September 11 was horrible, it didn't threaten the survival of the human race, like nuclear weapons do.

I want my books sold on airport bookstalls.