'Boldly going where hundreds have gone before' does not make headlines.

You can get an Egg McMuffin all day; you just can't get the hamburger all day.

There's an old saying in the space community: 'If God wanted us to be a spacefaring species, he would have given us a moon'.

For me, one of the most fertile consequences of the space program is the extent to which it stimulates people to innovate because they want to create a different tomorrow than what they're living in today. And it's that culture of innovation that spawns entirely new economies.

I lose sleep at night wondering whether we are intelligent enough to figure out the universe. I don't know.

The word smart is not applied to all professions, even if you are smart in that profession. No one talks about smart lawyers. They may say a brilliant lawyer. They'll talk about a creative artist. Smart is saved for scientists. It just is. It's not even really applied to medical doctors. It applies to scientists in the lab figuring out what hadn't been figured out before.

Intelligent design is a philosophy of ignorance.