When you innovate no one else can figure out how to do what you're doing because you're too far ahead of them. And the day they do figure out, you're on to the next object, the next widget, the next concept in innovation. And so America has benefited economically from the space race even though it was driven by military.

Somehow it's O.K. for people to chuckle about not being good at math. Yet if I said, 'I never learned to read,' they'd say I was an illiterate dolt.

We're talking about a being whose very existence challenges our own sense of priority in the universe.

I don't see why there is no intelligent alien life in the universe.

One of the most significant events in our distant past is still perhaps the greatest mystery: the origins of life itself.

It's progress I think, that science has joined philosophy, metaphysics & religion as subjects drunk people argue about in bars.

You can make a stack high enough to reach the moon and back, and only then will you have used your 100 billion hamburgers. This is terrifying news to cows.