I loathe people who say, 'I always read the ending of the book first.' That really irritates me, It's like someone coming to dinner, just opening the fridge and eating pudding, while you're standing there still working on the starter. It's not on.

Books can be misleading

I've been writing since I was six. It is a compulsion, so I can't really say where the desire came from; I've always had it. My breakthrough with the first book came through persistence, because a lot of publishers turned it down!

I've never wanted to be a witch, but an alchemist, now that's a different matter. To invent this wizard world, I've learned a ridiculous amount about alchemy. Perhaps much of it I'll never use in the books, but I have to know in detail what magic can and cannot do in order to set the parameters and establish the stories' internal logic.

The presence of hundreds of books had finally convinced Hermione that what they were doing was right.

The mind is not a book, to be opened at will and examined at leisure. Thoughts are not etched on the inside of skulls, to be perused by an invader. The mind is a complex and many-layered thing.

During the first five years that I was writing the series, I made plans and wrote small pieces of all the books. I concentrate on one book at a time, though occasionally I will get an idea for a future book and scribble it down for future reference.

When I was quite young my parents never said books were off limits.

I expect what you're not aware of would fill several books, Dursely.