Children's books aren't textbooks. Their primary purpose isn't supposed to be "Pick this up and it will teach you this." It's not how literature should be. You probably do learn something from every book you pick up, but it might be simply how to laugh.

Now, I don’t want any of you youngsters to worry — you’ll still have your Potions master when I’m through with him, never fear!” “Wouldn’t it be good if they finished each other off?” Ron muttered in Harry’s ear.

I've been writing my entire life, and I'll always write. But at times I have told myself that I don't necessarily have to publish anything else.

But you've been too busy saving the Wizarding world. Well ... I can't say I'm surprised. I knew this would happen in the end. I knew you wouldn't be happy unless you were hunting Voldemort. Maybe that's why I like you so much.

Harry witnessed Professor McGonagall walking right past Peeves who was determinedly loosening a crystal chandelier and could have sworn he heard her tell the poltergeist out of the corner of her mouth 'It unscrews the other way.

Every writer must have a chip of ice in his heart.

How thick can you get?