Sirius Black: Enough talk, Remus! Come on, let's kill him!
Remus Lupin: Wait!
Sirius Black: I did my waiting! Twelve years of it! In Azkaban!
Remus Lupin: Very well. Kill him. But wait one more minute. Harry has the right to know why.
Harry Potter: I know why. You betrayed my parents. You're the reason they're dead!
Remus Lupin: No, Harry, it wasn't him. Somebody did betray your parents... but it was somebody who, until quite recently, I believed to be dead!
Sybill Trelawney: "He will return tonight."
Harry Potter: Sorry?
Sybill Trelawney: "Tonight, he who betrayed his friends, whose heart rots with murder... shall break free. Innocent blood shall be spilt... and servant and master shall be reunited once more." Oh. I'm so sorry, dear boy. Did you say something?
Sybill Trelawney: My dear, from the first moment you stepped foot in my class... I sensed that you did not possess the proper spirit for the noble art of Divination. No, you see, there. You may be young in years, but your heart is as shriveled... as an old maid's, your soul as dry as the pages of the books... to which you so desperately cleave. (Hermione pushes a crystal ball on the ground and storms out...) Have I said something?
Remus Lupin (to Harry): Your father never set much store by the rules either. But he and your mother gave their lives to save yours. Gambling their sacrifice by wandering around the castle unprotected... with a killer on the loose seems to me a poor way to repay them!
Severus Snape: What's this?
Harry Potter: Spare bit of parchment.
Severus Snape: Really? Open it. (Snape points his wand at the parchment) Reveal your secrets. (text appears) Read it.
Harry Potter: "Messrs. Moony, Wormtail, Padfoot, and Prongs... offer their compliments to Professor Snape and..."
Severus Snape: Go on.
Harry Potter: "And request he keep his abnormally large nose out of other people's business."
Hermione Granger: Harry, what happened?
Harry Potter: He was their friend... and he betrayed them. He was their friend! I hope he finds me. Because when he does, I'm gonna be ready! When he does, I'm gonna kill him!
Fred Weasley: It's the secret to our success.
George Weasley: It's a wrench giving it to you... believe me...
Fred Weasley: But we've decided your needs are greater than ours. George, if you will.
George Weasley: I solemnly swear that I am up to no good.
Harry Potter (reads the appearing words): "Messrs. Moony, Wormtail, Padfoot and Prongs... are proud to present the Marauder's Map."
George Weasley: We owe them so much.
Severus Snape: That's the second time... you've spoken out of turn, Miss Granger. Are you incapable of restraining yourself... or do you take pride in being an insufferable know-it-all?
Albus Dumbledore: In dreams, we enter a world that's entirely our own. Let them swim in the deepest ocean or glide over the highest cloud.
Remus Lupin: The very first time I saw you, Harry, I recognized you immediately. Not by your scar, by your eyes. They're your mother, Lily's. Yes. Oh, yes. 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.
Harry Potter: Professor, can I ask you something?
Remus Lupin: You want to know why I stopped you facing that boggart, yes? I thought it'd be obvious. I assumed it would take the shape of Lord Voldemort.
Harry Potter: I did think of Voldemort at first. But then I remembered that night on the train... and the dementor.
Remus Lupin: I'm very impressed. That suggests what you fear the most is fear itself. This is very wise.