America has an economy reversing relative to other nations in the world. And I want to turn that around. And one way I know to turn it around is to get everyone excited about what it is to innovate again.

Would a NASA reality show "Lunar Shore" be more popular than "Jersey Shore?" Civilization's future depends on that answer.

Some claim evolution is just a theory. As if it were merely an opinion. The theory of evolution, like the theory of gravity, is a scientific fact. Evolution really happened. Accepting our kinship with all life on Earth is not only solid science. In my view, it’s also a soaring spiritual experience.

As important as the civil rights movement was, I think what will rise to the top is that we left Earth in that time.

We spend the first year of a child's life teaching it to walk and talk and the rest of its life to shut up and sit down. There's something wrong there.

Three and a half million years ago our ancestors - yours and mine - left these traces [indicates footprints]. We stood up and parted ways from them. Once we were standing on two feet, our eyes were no longer fixated on the ground. Now, we were free to look up and wonder.

I didn't even know there were stars to look at to not see. If you don't know that they're there, you don't know that you're missing them.