Draco Malfoy: Maybe I did hex that Bell girl. Maybe I didn't. What's it to you?
Severus Snape: I swore to protect you. I made the Unbreakable Vow.
Draco Malfoy: I don't need protection. I was chosen for this. Out of all others. Me. And I won't fail him.
Severus Snape: You're afraid, Draco. You attempt to conceal it, but it's obvious. Let me assist you.
Draco Malfoy: No! I was chosen. This is my moment.
Harry Potter: It was Malfoy.
Minerva McGonagall: That is a very serious accusation, Potter.
Severus Snape: Indeed. Your evidence?
Harry Potter: I just know.
Severus Snape: You just... know. You astonish with your gifts, Potter. Gifts mere mortals can only dream of possessing. How grand it must be to be the Chosen One.
Minerva McGonagall: Put an end to it. Don't let Potter compete.
Albus Dumbledore: You heard Barty. The rules are clear.
Minerva McGonagall: Well, the devil with Barty and his rules. And since when did you accommodate the Ministry?
Severus Snape: Headmaster, I, too, find it difficult to believe this mere coincidence. However, if we are to truly discover the meaning of these events... perhaps we should, for the time being... let them unfold.
Minerva McGonagall: What...? Do nothing? Offer him up as bait? Potter is a boy, not a piece of meat.
Severus Snape: I told Dumbledore you were helping an old friend into the castle. And now, here's the proof.
Sirius Black: Brilliant, Snape. You've put your keen mind to the task and come to the wrong conclusion. Now, if you'll excuse us, Remus and I have some unfinished business to attend to.
(Snape puts his wand at Sirius' throat...)
Severus Snape: Give me a reason. I beg you!
Remus Lupin: Severus, don't be a fool.
Sirius Black: He can't help it. It's habit by now.
Remus Lupin: Be quiet.
Sirius Black: Be quiet yourself, Remus!
Severus Snape: You two, quarrelling like an old married couple.
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."
Severus Snape: A girl has been snatched by the monster, Lockhart. Your moment has come at last.
Gilderoy Lockhart: My moment?
Severus Snape: Weren't you saying just last night... that you've known all along where the entrance to the Chamber of Secrets is?
Minerva McGonagall: That's settled. We'll leave you to deal with the monster, Gilderoy. Your skills, after all, are legend.
Gilderoy Lockhart: Very well. I'll just be in my office getting... Getting ready.