How do you remember everything from different books when you are still writing the HP series? As obsessive fans will tell you, I do slip up! Several classrooms move floors mysteriously between books and these are the least serious continuity errors! Most of the fansites will point you in the direction of my mistakes. But the essentials remain consistent from book to book because the story has been plotted for a long time and it is clear in my mind.

Vot is the point of being an international Quidditch player if all the good-looking girls are taken?

You’re not supposed to dislike your own child. You were supposed to like them no matter what, even if they were not what you wanted.

Hope springs forever.

I've only suffered writer's block badly once, and that was during the writing of Chamber of Secrets. I had my first burst of publicity about the first book and it paralysed me. I was scared the second book wouldn't measure up, but I got through it!

Go on, have a pasty," said Harry, who had never had anything to share before or, indeed, anyone to share it with. It was a nice feeling, sitting there with Ron, eating their way through all Harry's pasties, cakes, and candies (the sandwiches lay forgotten).

I don't believe in the kind of magic in my books. But I do believe something very magical can happen when you read a good book.