Like actors and writers who are on and off again in terms of employment, I had a very unstructured life.

There are a lot of people that get interested in something, and they hear about it, and they read about it, and then they watch it happen, and that's why I had quite an interest in the lottery because you'd interest a lot of people, and then just a few would win a chance to do something.

In space, you don't get that much noise. Noise doesn't propagate in a vacuum.

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

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.

Retain the vision for space exploration. If we turn our backs on the vision again, we're going to have to live in a secondary position in human space flight for the rest of the century.

Space architectures capable of supporting a permanent human presence on Mars are extraordinarily complex, with many different interdependent systems.