Elephant and Piggie have a very large input. They have a distinct aesthetic taste. They like books that are philosophical. They like books that are dialogue-driven. They like books that are about issues that they live with, in their own elephantine and porcine ways.

I bet your mom would let me." -Pigeon, Don't Let the Pigeon Drive the Bus-

Writing for children is as easy as describing the history of the Byzantium in three words.

If you ever find yourself in the wrong story, leave.

When you make a decision, you don't have to be locked into it. One of the ways that you grow is by starting over. There are all kinds of really powerful things in that moment, which is what makes story work. Part of Laurie's Keller personality is this ability to revise, to come back and to look at things from a different angle. I don't want to tell stories too much out of school, but Laurie Keller is the only person who sent me a card on my birthday and then sent me a revision.

I've been lucky enough to have made enough of these types of children's books that while I don't necessarily know what works, I know what doesn't work. I've got a sense of the rhythm and the form. With this series, I get to play with ideas that I would never have myself.

I also learn a lot about everybody else's process. People create in different ways, so that has opened me up to different processes and experimenting. Laurie Keller is a character person, so she came to the project with these blades-of-grass characters that we were able to literally grow a story around.