I grew up in a country that I thought was special. And it was.

Heavy lifting doesn't need to be heavy spending if we do the job right.

I believe that space travel will one day become as common as airline travel is today. I'm convinced, however, that the true future of space travel does not lie with government agencies -- NASA is still obsessed with the idea that the primary purpose of the space program is science -- but real progress will come from private companies competing to provide the ultimate adventure ride, and NASA will receive the trickle-down benefits.

If we can conquer space, we can conquer childhood hunger.

I don't believe any pair of people had been more removed physically from the rest of the world than we were.

I am definitely not rich.

We have the ability, at such high fidelity, to simulate the physical world through computers. But when the spiritual world or human behavior comes into play, we don't have a very good model for that at all.