“If a book will be too difficult for grown-ups, then you write it for children.”

“You have to write the book that wants to be written. And if the book will be too difficult for grown-ups, then you write it for children.”

“When I have something to say that I think will be too difficult for adults, I write it in a book for children. Children are excited by new ideas; they have not yet closed the doors and windows of their imaginations. Provided the story is good... nothing is too difficult for children.”

“You cannot write for children. They're much too complicated. You can only write books that are of interest to them. ”

“When you're old enough to write a book for children, by then you'll have become a grown up and have lost all your jokeyness. Unless you're an undeveloped adult and still have an enormous amount of childishness in you.”

“You write not for children but for yourself. And if by good fortune children enjoy what you enjoy, why then you are a writer of children's books.”