How we cite our quotes: All quotations are from Harry Potter and the Prisoner of Azkaban.
Quote #1
MARGE: You mustn't blame yourself about how this one turned out. It's all to do with blood. Bad blood will out.
Although Marge's comment doesn't apply to Harry as intended, perhaps she's onto something. All the Dursleys seem to be terrible people, so maybe they're the ones infected by bad blood.
Quote #2
MARGE: It's all to do with the mother. You see it all the time with dogs. If something's wrong with the b****, then something's wrong with the pup.
Marge goes a bit too far calling Harry's dead mother the b-word. Insensitivity is something else that runs in the Dursley family.
Quote #3
LUPIN: I knew her. Your mother was there for me at a time when no one else was. Not only was she a singularly gifted witch, she was also an uncommonly kind woman. She had a way of seeing the beauty in others even, and most especially, when that person could not see it in themselves. And your father, James, on the other hand... he...he had a certain, shall we say, talent for trouble. A talent, rumor has it, he passed on to you. You're more like them than you know, Harry. In time, you'll come to see just how much.
Lupin's Lily lovefest proves what we already know: that Harry's mother wasn't at all like Marge described her. Even though we knew that, it's nice to be reminded.