I'm such a long-term investor, I've never really let go and celebrated what I did with the Hubble telescope.

And so, I was not a military test pilot, but as soon as NASA expressed an interest in flying scientists and people who were not military test pilots, that was an epiphany that just came like a stroke of lightning.

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.

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 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.

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.

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.