As an adult, I'll give a writer 50 pages. If the book doesn't interest me in 50 pages, I'll say the heck with it - there are just too many other things to read. A child won't give you 50 pages.

Humor is the oxygen of children's literature. There's a lot of competition for children's time, but even kids who hate to read want to read a funny book.

In my first story, 'Mr. Mysterious & Company'... I was asked to take out some of the humor because editors were afraid reviewers would dismiss the book as a joke. Today, humor is enjoyed and no longer regarded as literary brummagem.

I am astonished, when I pause to think about it, to discover myself to be an author of humorous novels for children. Or an author at all. I had a childhood much like everyone else's. What went wrong?