Harry Potter and the Goblet of Fire
Now, if there's no countercurse, why I am I showing you? Because you've got to know. You've got to appreciate what the worst is. You don't want to find yourself in a situation where you're facing it. CONSTANT VIGILANCE! (14.71)
"So ... got any ideas how you're going to get past your dragon yet?" said Moody.
"No," said Harry.
"Well, I'm not going to tell you," said Moody gruffly. "I don't show favoritism, me. I'm just going to give you some good, general advice." (20.62-4)
"Ashamed?" said Hermione blankly. "But – Winky, come on! It's Mr. Crouch who should be ashamed, not you! You didn't do anything wrong, he was really horrible to you –"
But at these words, Winky clapped her hands over the holes in her hat, flattening her ears so that she couldn't hear a word, and screeched, "You is not insulting my master, miss! You is not insulting Mr. Crouch! Mr. Crouch is a good wizard, miss! Mr. Crouch is right to sack bad Winky!" (21.144-5)