Leaders of the world, my message to you is simple: to achieve universal peace and understanding on this planet you have only to speak plainly, even though you may look foolish. This is a thousand times better than looking good and talking nonsense.

One of the glories of doing the book So You Want to Be President? was the shifts in tone, where I was able to be humorous and then very serious. And the impeachment page is certainly the best example of that. I didn't have to think too much about how to present this one. I got the idea right away that a good way of showing the shame of President Nixon would be to put him down in the shadows under the Lincoln Monument, with Lincoln sort of glaring down at him from an elevated, better-lit position.

Art - I had never thought of that as a career because it was like something I did so naturally, and it was fluid, and it is. And even though I still admire literature as the superior art form, I have to admit that art, for me, that's it; that's what I'm good at, and that's what I should be concentrating on.

.... When you have no voice, you don't exist

I grew up going to the theater. That was one of the nice things my mom did was she took us to plays and symphony concerts and to the museums. Theater captured my imagination. I just loved the idea of that box, which is essentially what a stage is from a certain distance, a box with all this life going on in it. So, I was eleven when I wrote my first play. Of course, it was horrible.

I feel that if I had not had an art program in my school, I would have failed in a big way. My teachers knew I was intelligent, but they didn't quite know how I was ever going to apply that intelligence. The one or two teachers who knew me well knew that it would be through drawing or acting or whatever means of expression I was allowed.

What I try to do in my picture books is to be all-inclusive, but not exclusive, to not exclude the kid and not exclude the parents from the experience. And it's not a very easy task; you can't find stories that work that way too much of the time.