What's your favourite Harry Potter quote?

Question:

What's your favourite Harry Potter quote?

What is YOUR favourite Harry Potter quote?

It can be from any of the books.

Mine?
"Sometimes you remind me a lot of James. He called it my 'furry little problem' in company. Many people were under the impression that I owned a badly behaved rabbit."
-Remus Lupin

"Reading between the lines, I??d say she thinks you??re a bit conceited, mate."
-Young Sirius

Best Answer - Chosen by Asker: Snape: Yes, SIR."
Harry: You don't have to call me 'sir', Professor.

Harry: How long have you been 'Big D' then?
Dudley: Shut it.
Harry: Cool name, but you'll always be Ickle Diddykins to me.
Dudley: Shut your face.
Harry: You don't tell her to shut her face. What about 'popkin' and 'Dinky Diddydums,' can I use them then?

Harry: Dumbledore's man through and through. That's right

Ron: From now on, I don't care if my tea leaves spell 'die, Ron, die,' I'm chucking them in the bin where they belong.

Ron: Percy wouldn't recognize a joke if it danced naked in front of him wearing Dobby's tea cozy.

Hermione to Ron: Just because you've got the emotional range of a teaspoon doesn't mean we all have.

Hermione: Grawp's about sixteen feet tall, enjoys ripping up twenty-foot pine trees, and knows me as Hermy.

Dumbledore: To the well organized mind, death is but the next great adventure.

Dumbledore on being sent to Azkaban: I could break out, of course, but what a waste of time, and frankly I can think of a whole host of things I'd rather be doing.

Dumbledore: Alas! Ear wax!

Dumbledore: And now Harry, let us step out into the night and pursue that flighty temptress, adventure.

Snape: Another ten points from Gryffindor. I would expect nothing more sophisticated from you, Ronald Weasley, the boy so solid he cannot Apparate half an inch across a room.

Luna: Don't worry. You're just as sane as I am.

Mundungus: S'up Figgy?

Lily to James: I wouldn't go out with you if it was a choice between you and the giant squid.

And of course:
Phineas Nigellus: You know, Minister, I disagree with Dumbledore on many counts... but you cannot deny he's got style....