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.

How awful it was, thought Tessa, remembering Fats the toddler, the way tiny ghosts of your living children haunted your heart; they could never know, and would hate it if they did, how their growing was a constant bereavement.

She seemed to think that one of the perks of marriage was that it gave you rights of comment and intrusion over single people's love lives.

Ah! Bertie Bott’s Every Flavor Beans! I was unfortunate enough in my youth to come across a vomit-flavored one, and since then I’m afraid I’ve rather lost my liking for them — but I think I’ll be safe with a nice toffee, don’t you?” He smiled and popped the golden-brown bean into his mouth. “Alas! Ear wax!

I'm not so naive that I didn't know or didn't suspect that, at some point, someone was going to say "You're writing about the occult." My wizarding world is a world of imagination. I think it is a moral world.

She can't keep writing about what a tragic little hero I am, it'll get boring.

Depression is the most unpleasant thing I have ever experienced. . . . It is that absence of being able to envisage that you will ever be cheerful again. The absence of hope. That very deadened feeling, which is so very different from feeling sad. Sad hurts but it's a healthy feeling. It is a necessary thing to feel. Depression is very different.