Never tickle a sleeping dragon.

I am sorry too," said Lupin. "Sorry I will never know [my son]... but he will know why I died and I hope he will understand I was trying to make a world in which he could live a happier life.

Finding out what you’re good at, and doing it to the best of your ability, is the route to self-respect.

Malfoy glanced around. Harry knew he was checking for signs of teachers. Then he looked back at Harry and said in a low voice, "You're dead, Potter." Harry raised his eyebrows. "Funny," he said, "you'd think I'd have stopped walking around.

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.

The poor things keep calling in those – those pumbles, I think they're called – you know, the ones who mend pipes and things – " "Plumbers?" " – exactly, yes, but of course they're flummoxed.

Why, dear boy, we don't send wizards to Azkaban just for blowing up their aunts.