It was a life with purpose. And it was also a lot of fun. Fishing is fun. Hiking up mountains is fun. Building a wall out of river rocks dug up from the bottom of a glacial lake is not fun. Not at all. But it does give a work ethic that you can take anywhere in the world.

I wasn't in a position that some other memoirists are, dealing with families who fed them meth, or kidnapped them, or did something that would make the writer not want to see that family again. I wanted to see my family. I wanted to celebrate them. I was proud of who we were, in the wilderness, floating down rapids or hiking over glaciers, and everywhere else.

It's much harder when you're writing about your life, than when you're writing fiction.

My dad felt pretty strongly that I know about the basic workings of a plane and so he taught me how to read and set the instruments, as well as the basics of taking off and landing.

Maybe it's easier to think about dishonesty and what kind of trouble you can get into as a writer when love and honesty collide and you sidestep that collision, either because you want to protect somebody or you want to blame somebody - which are the usual impulses in love: protection and blame, frequently at the same time - so you don't exactly tell the truth.

I was an only child. And it's very much my temperament. I remember playing with a piece of string in my room for hours. I had never thought about what it would be like to have siblings.

I turned what was a wonderful case of self-reliance into a case of self-exile. Which is not uncommon, I think, in people who grow really early and have to learn how to take care of themselves. They have trouble hinging their lives with anybody else.