Professor McGonagall: Professor Moody! What are you doing?
Professor 'Mad-Eye' Moody: Teaching.
Professor McGonagall: Is... Is that a student?
Professor 'Mad-Eye' Moody: Technically it's a ferret.
Dumbledore: Never much liked these curtains. Set them on fire in my fourth year, accidentally of course.
[The four champions and Hermione Granger gather around Dumbledore before the beginning of the first task.]
Dumbledore: You've waited, you've wondered, and at last the moment has arrived, a moment only four of you can fully appreciate - what are you doing here, Miss Granger?
Hermione Granger: Oh ... Um ... Sorry, I'll just go then.
Professor McGonagall: Mr. Potter, are you and Miss Patil ready?
Harry Potter: Ready? For what?
Professor McGonagall: To dance! It's traditional for the three... Well, in this case, four champions to begin the dance. Surely I told you that?
Harry Potter: No.
Professor McGonagall: Oh... Well, now you know.
[Ron tells Harry that he warned him about the dragons.]
Harry Potter: Hagrid warned me about the dragons!
Ron Weasley: No! No! Remember... I told Hermione to tell you that Seamus told me that Dean was told by Parvari that Hagrid was looking for you. Seamus didn't really tell me anything. So it was really me all along! I thought you'd be able to figure it out from there.
Harry Potter: How could anybody figure that out? It's completely mental!
[Ron unhappily looks at himself in the mirror. Harry walks in looking smart.]
Ron Weasley: What are those?
Harry Potter: My dress robes...
Ron Weasley: Those're all right! No lace, no dodgy little collar...
Harry Potter: Well, I expect yours are more traditional...
Ron Weasley: Traditional? They're ancient! I look like my great aunt Tessie! [Smells robe.] I smell like my great aunt Tessie! [Once again looks at himself in the mirror.] Murder me, Harry.
Dumbledore: No spell can bring the dead back to life, I trust you know that. Dark and Difficult times lie ahead, Harry. Now is the time that we must choose between what is right, and what is easy.
Ginny Weasley: He just asked Fleur Delacour to the ball. Actually he sort of screamed at her. It was a bit frightening.
Harry Potter: What did he do next?
Ron Weasley: What else? I ran for it!
Harry Potter: What's with the flower? Hagrid... Did you comb your hair?
Hagrid: You might want to try the same thing yourself now and again.
Professor McGonagall: Potter is a boy! Not a piece of meat!
[Moody writes on blackboard, with his back facing the students.]
Professor 'Mad-Eye' Moody: You should find another place for your gum rather than under your desk, Mr. Finnigan!
Seamus Finnigan: [Whispers at the back of the classroom.] Blimey, the old codger can see out of the back of his head!
[Moody spins around and throws a piece of chalk at Seamus across the classroom.]
Professor 'Mad-Eye' Moody: AND HEAR ACROSS CLASSROOMS!
Harry Potter: You're being stupid.
Ron Weasley: Yeah, that's me. Harry Potter's stupid friend!
Lord Voldemort: Harry! I'd almost forgotten you were here, standing on the bones of my father. I'd introduce you, but rumor has it you're almost as famous as me these days.
Neville Longbottom: Oh my God! I've killed Harry Potter!
Professor McGonagall: Now, Mr. Weasley, put your right hand on my waist.
Ron: Whaaa?
Professor McGonagall: We never use Transfiguration on a student as punishment! Didn't Dumbledore tell you?
Professor 'Mad-Eye' Moody: He might've mentioned it.
Hermione Granger: Promise you'll write me this summer; both of you!
Ron Weasley: I won't; you KNOW I won't.
Hermione: Harry will; won't you?
Harry Potter: Yeah; every week!
Harry Potter: [After reading Rita's notes.] Hey, my eyes aren't "glistening with the ghosts of my past"!
Ron: Blimey dad, how far up are we?
Lucius Malfoy: Put it this way, if it rains you'll be the first to know!
Answer: Not at all. In fact, David Heyman made the decision for his eyes to be blue in the films for him to be more scary! They felt that his red eyes in Sorcerer's Stone did not show enough emotion to make him an evil character. It was felt in Goblet of Fire that the light blue eyes would be perfect to show his evil in the moonlight, and they kept it on for later films.