Scrimgeour: "It's time you learned some respect!" Harry: "It's time you earned it.

That wand’s more trouble than it’s worth,” said Harry. “And quite honestly,” he turned away from the painted portraits, thinking now only of the four-poster bed lying waiting for him in Gryffindor Tower, and wondering whether Kreacher might bring him a sandwich there, “I’ve had enough trouble for a lifetime.

In fact, you couldn't give me anything to make me go back to being a teenager. Never. No, I hated it.

Professor Flitwick had dried himself off and set Seamus lines ("I am a wizard not a baboon brandishing a stick")

A Wrackspurt . . . They’re invisible. They float in through your ears and make your brain go fuzzy,” she said. “I thought I felt one zooming around in here.

Muggle women wear them, Archie, not the men, they wear these," said the Ministry wizard, and he brandished the pinstriped trousers. "I'm not putting them on," said old Archie in indignation. "I like a healthy breeze 'round my privates, thanks.

That's what they should teach us here. How girls' brains work... It would be more useful than divination, anyway.