"Obviously it's easier when I' m doing the adapting myself. But my feeling is, your potential upside far outweighs the downside. Ultimately, they [moviemakers] can't change your book. Your book remains on the shelf the way you wrote it. If they make a great movie of your book, then you have the equivalent of millions and millions of dollars of advertising for your book. If the movie's not that good, that doesn't mean the book's not good. It doesn't change what you've already written. It has the potential to reach more people."