To my mathematical brain, the numbers alone make thinking about aliens perfectly rational.

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.

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.

I don't fear God- I fear His believers.

I do not believe in a personal God.

Succeed in spite of management.

Real science can be far stranger than science fiction and much more satisfying.