Water seeks its own level. Look at them. The Tigris, the Euphrates, the Mississippi, the Amazon, the Yangtze. The world's great rivers. And every one of them finds its way to the ocean.

I don't think we [with Kate DiCamillo] intended to write a book about friendship, I think we intended to write a book about two friends.

Wouldn't want to miss a war, would I?

So we [with Kate DiCamillo] decided to give the friends an object and see what they did with it. The object was a sock and it went from there. Once we got going, once we got on a roll, it became very easy to work together and to figure out how to do it. We would meet for two-hour segments, usually from 10-12, two or three times a week. We met all one summer, and I think into the fall.

Water seeks its own level. Look at them. The Tigris, the Euphrates, the Mississippi, the Amazon, the Yangtze. The world's great rivers. And every one of them finds its way to the ocean.

We had dinner at Figlio's, which has turned into a restaurant called Il Gato. I'm 99% positive I had Joe's Eggs. I know every time I went there, and I loved it, I ordered Joe's Eggs. Kate [DiCamillo] probably had a pizza, because she loves pizza.

So we [with Kate DiCamillo] would act them out, we would toss ideas back and forth, we would laugh, we would argue. Sometimes it went really well, sometimes it was such a pain in the ass. Our other rule was that we wouldn't work on it at all when we weren't in the other's presence. It was really hard not to do that. We'd start going on email back and forth, 'What do you think about this, what do you think about that?' But, no, no, no, it had to be live. So we forced ourselves not to look at it except during those two-hour stretches when we were actually with each other.