Harry Potter and the Prisoner of Azkaban (film)

"Expecto patronum!"

"I broke the law. Underage wizards aren't allowed to use magic at home."

"He was their friend… and he betrayed them. [furiously] HE WAS THEIR FRIEND! [vengefully] I hope he finds me. Because when he does, I'm gonna be ready. When he does, I'm gonna KILL HIM!"

"[to Professor Lupin before he heads back to the Gryffindor dorm] Professor, just so you know, I don't think that map always works. Earlier, it showed someone in the castle… someone I know to be dead. [Lupin: Oh, really, and who might that be?] Peter Pettigrew."

"[Sirius: That was a noble thing you did back there. He doesn't deserve it.] Well, I just didn't think my dad would've wanted his two best friends to become killers. Besides, dead, the truth dies with him. Alive, you're free."

"[seeing Sirius talking with his past version] You see Sirius talking to me there? He's asking me to come live with him. [Hermione: That's great.] When we free him, I'll never have to go back to the Dursleys. It'll just be me and him. We could live in the country, some place you can see the sky. I think he'll like that after all those years in Azkaban."

"[after Buckbeak saves him and Hermione from Werewolf Lupin] Poor Professor Lupin's having a really tough night."

"Honestly, Ron. How can somebody be in two places at once?"

"I solemnly swear that I am up to no good."

"[holding the Marauder's Map] Lumos. I solemnly swear that I am up to no good. Mischief managed. Nox."

"Oh yeah, terribly funny. Really witty! God, this place has gone to the dogs. Wait until my father hears that Dumbledore's got this oaf teaching classes."

"[after scaring Buckbeak] It's killed me! It's killed me! You'll regret this! You and your bloody chicken..."

"Dementors are vicious creatures. They'll not distinguish... between the one they hunt and the one who gets in their way. Therefore, I must warn each and every one of you, to give them no reason to harm you. It is not in the nature of a dementor to be forgiving. But you know, happiness can be found... even in the darkest of times... if one only remembers to turn on the light."

"For in dreams, we enter a world that is entirely our own. Let him swim in the deepest of oceans or glide over the highest cloud."

"A child's voice, however honest and true, is meaningless to those who've forgotten how to listen."

"Mysterious thing, time. Powerful, and when meddled with, dangerous. Sirius Black is in the topmost cell of the dark tower. You know the laws, Miss Granger. You must not be seen. And you would do well, I feel, to return before this last chime. If not, the consequences are too ghastly to discuss. If you succeed tonight, more than one innocent life may be spared."

"I actually have quite a pleasant disposition as a dog; so much so, in fact, that more than once, James suggested that I make the change permanent. The tail I could live with, but the fleas...they're murder."

"[trying to stop Lupin from transforming into a werewolf] Remus, my old friend! Have you taken your potion tonight? You know the man you truly are, Remus! This heart is where you truly live! This heart here! This flesh is only flesh!"

"Come now, Harry. The Ministry doesn't send people to Azkaban for blowing up their aunts."

"Black was vicious. He didn't kill Pettigrew... he destroyed him! A finger! That's all that was left, a finger! Nothing else."

"Aunt Marge: It's nothing to do with the father, it's all to do with the mother. You see it all the time with dogs. If there's something wrong with the bitch, then there's something wrong with the pup."

"Sybill Trelawney: You see, the truth lies buried like a sentence deep within a book, waiting to be read. But first, you must broaden your minds. First, you must look beyond."

"Have you seen this wizard?"

"Something wicked this way comes."

"Everything will change."

"The time has come."

"Mysteries will unfold."

"Secrets will be revealed."

"Character will be tested."

"Darkness will descend."

"Daniel Radcliffe as Harry Potter"

"Gary Oldman as Sirius Black"

"Rupert Grint as Ron Weasley"

"Emma Watson as Hermione Granger"

"David Thewlis as Professor Remus Lupin"

"Michael Gambon as Albus Dumbledore"

"Alan Rickman as Severus Snape"

"Maggie Smith as Professor McGonagall"

"Robbie Coltrane as Rubeus Hagrid"

"Tom Felton as Draco Malfoy"

"Timothy Spall as Peter "Wormtail" Pettigrew"