Gryffindor: "I don't follow rules, I make them. And when necessary, I break them."

Ravenclaw: "So you stuttering sapheads are too dim to exercise your own rights, and you've got the combined vocabulary of a baked potato."

Hufflepuff: "Who would've thought, at the beginning of the year, that we would all become great friends?"

Slytherin: "Don't underestimate her and don't bet against her." / "From now on, we're protecting our own." / "You're welcome to challenge me, but you'll lose."