They don’t need walls and water to keep the prisoners in, not when they’re trapped inside their own heads, incapable of a single cheerful thought. Most go mad within weeks - Lupin

Be good now, Potty...Weasel King.

No, I'm fine,' said Harry, wondering why he kept telling people this, and wondering whether he had ever been less fine.

"Oh, of course," said Ron, clapping a hand to his forehead. "I forgot we'll be hunting down Voldemort in a mobile library."

I don't go looking for trouble. Trouble usually finds me.

We can't choose our fate, but we can choose others. Be careful in knowing that.

The Chasers throw the Quaffle and put it through the hoops to score,” Harry recited. “So — that’s sort of like basketball on broomsticks with six hoops, isn’t it?” “What’s basketball?” said Wood curiously. “Never mind,” said Harry quickly.