You must accept the reality of other people. You think that reality is up for negotiation, that we think it's whatever you say it is. You must accept that we are as real as you are; you must accept that you are not God.

A tiny little wooden man [was] slowly ascending the steps to a real set of gallows, both perched on a box that read: Reusable Hangman — Spell It Or He’ll Swing!

Lord Voldermort Has Risen Again.

Next time there’s a ball, ask me before someone else does, and not as a last resort!

Merlin’s beard, Harry, you made me jump,” said Slughorn, stopping dead in his tracks and looking wary. “How did you get out of the castle?” “I think Filch must’ve forgotten to lock the doors,” said Harry cheerfully, and was delighted to see Slughorn scowl.

Authority figures always attract trouble

All those poor elves I haven’t set free yet, having to stay over during Christmas because there aren’t enough hats!