He’ll accept anyone at Hogwarts, s’long as they’ve got the talent. Knows people can turn out okay even if their families weren’ . . .well . . . all tha’ respectable.

Professor Trelawney: "Everything went pitch-black and the next thing I knew I was being hurled headfirst out of the room!" Harry Potter: "And you didn’t see that coming?" Professor Trelawney: "No, as I say it was pitch — ” [Glares at Harry angrily]

Be ruthless about protecting writing days, i.e., do not cave in to endless requests to have "essential" and "long overdue" meetings on those days.

I don't feel quite normal if I haven't written for a while. I doubt I will ever again write anything as popular as the "Harry" books, but I can live with that thought quite easily. By the time I stop writing about Harry, I will have lived with him for 13 years, and I know it's going to feel like a bereavement. So I'll probably take some time off to grieve, and then on with the next book!

The long game was ended, the Snitch had been caught, it was time to leave the air.

If all goes well, you will be able to save more than one innocent life tonight.

I seem to remember telling you both that I would have to expel you if you broke any more school rules,” said Dumbledore. Ron opened his mouth in horror. “Which goes to show that the best of us must sometimes eat our words,” Dumbledore went on, smiling.