I have a great relationship with animals, and with children. I get to their level. I try to see the way a child looks at the world, it's hugely different.

The way you remember the past depends upon your hope for the future. And if what you see in your future has no hope, it has no potential, then you view the past that brought you to here as not very good.

Hubble touches people. When you're looking that far out, you're giving people their place in the universe, it touches people. Science is often visual, so it doesn't need translation. It's like poetry, it touches you.

Statistically it's a certainty there are hugely advanced civilizations, intelligences, life forms out there. I believe they're so advanced they're even doing interstellar travel. I believe it's possible they even came here.

I’m not a risk taker. But astronauts are professionals, so you get out on the field and play ball. I tried to take it in stride because that’s what I had to do to get into space. That’s where I belong, and I’m pretty good at it.

That I learned even as a three year-old that I see this world that is really a mess and I learned to say, this is not me. I am not the one that is messed up. It is out there.

I think there are huge lessons there, for young people who are getting started in life, as well as other people. And that is, to take responsibility for your own life. Only you are responsible for the course you take from there.