Harry Potter and the Prisoner of Azkaban (Harry Potter, #3)

by J.K. Rowling

What if I accidentally let something slip?” “You’ll get the stuffing knocked out of you, won’t you?” roared Uncle Vernon, advancing on Harry with his fist raised. But Harry stood his ground. “Knocking the stuffing out of me won’t make Aunt Marge forget what I could tell her,” he said grimly.

Now he's thinking like a slytherin!

“She deserved it,” Harry said, breathing very fast. “She deserved what she got. You keep away from me.”

He's entering his reputation era. Look what you made him do.

“YOU DON’T KNOW POTTER!” shrieked Snape. “HE DID IT, I KNOW HE DID IT —”

Snape is basically the slytherin Neville Longbottom. Bullied for so long that he snapped.

you did see your father last night, Harry. . . . You found him inside yourself.”