Of course not,” said Hermione. “Everything we need is here on this paper.

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]

Worst that can happen is Hagrid’ll have to get rid of the skrewts. Sorry ... did I say worst? I meant best.

Mistletoe," said Luna dreamily, pointing at a large clump of white berries placed almost over Harry's head. He jumped out from under it. "Good thinking," said Luna seriously. "It's often infested with nargles.

Fred and George turned to each other and said together, “Wow — we’re identical!

Kill me then,' panted Harry, who felt no fear at all, but only rage and contempt. 'Kill me like you killed him, you coward-' DON'T-' screamed Snape, and his face was suddenly demented, inhuman, as though he was in as much pain as the yelping, howling dog stuck in the house behind them- 'CALL ME A COWARD!

If you are writing children's books, you need to be a ruthless killer.