It's hard to say what drives a three year-old, but I think I had a sense that nature was my solace, and nature was a place in which there was beauty, in which there was order.

Their spirituality was in nature, even though Emerson was a preacher on the pulpit, he ended up going out into nature for direct, face-to-face communication with God, if you want to call all of this creation part of God.

I never read a single book as a child. I did not read as a child. I worked on the farm. I had books in the classroom, but that was it. I never read a single book outside of the classroom.

It is humanity's destiny to explore the universe. When we start thinking and working on that cosmic level, we will transcend our parochial differences and tribal natures and become global creatures, solar system creatures. Then we will figure out where we fit in.

There really isn't a time to pause and have a celebration. I feel so serious about the whole thing.

Getting out of the comfortable path, that's what exploration is all about.

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.