Many adults feel that every children's book has to teach them something.... My theory is a children's book... can be just for fun.

Well, first you have to love writing. A lot of authors love having written. But I enjoy the actual writing. Beside that, I think the main reason I can be so prolific is the huge amount of planning I do before I start to write. I do a very complete, chapter-by-chapter outline of every book I write. When I sit down to write, I already know everything that's going to happen in the book. This means I've done all the important thinking, and I can relax and enjoy the writing. I could never write so many books if I didn't outline them first.

It's my job, too, to keep up with pop culture and what the kids are into 'cause you don't want to sound like an old man trying to write for kids. I spend a lot of my time spying on them.

When I write, I try to think back to what I was afraid of or what was scary to me, and try to put those feelings into books.

Most fears are basic: fear of the dark, fear of going down in the basement, fear of weird sounds, fear that somebody is waiting for you in your closet. Those kinds of things stay with you no matter what age.

I always just wanted to be funny. I never really planned to be scary.

I guess I'm way too kind and generous, and a saint - if you can believe that!