How we cite our quotes: All quotations are from The Dark Knight.
Quote #4
THE JOKER: Don't talk like one of them. You're not! Even if you'd like to be. To them, you're just a freak, like me.
We see the Joker identifying with Batman a number of times in this film. In fact, he seems kind of peeved that Batman isn't standing with him about the squares. Are these two really closer to each other than the rest of Gotham? As scary as it sounds, the answer is probably "yes."
Quote #5
ALFRED: Will you be wanting the Batpod, sir?
BRUCE: In the middle of the day, Alfred? Not very subtle.
ALFRED: The Lamborghini, then. Much more subtle.
Once again, Alfred cuts to the heart of it. Bruce will always be Batman, regardless of what he's driving and when he's driving it.
Quote #6
HARVEY DENT: Remember that name you all had for me when I was at Internal Affairs? What was it, Gordon?
GORDON: Harvey, I...
HARVEY DENT: Say it. SAY IT!!!
GORDON: Two-Face. Harvey Two-Face.
TWO-FACE: Why should I hide who I am?
This is Harvey's dark acknowledgement that Two-Face was always a part of him, even before he became DA. We suspect that that hurts him a heck of a lot more than those burns do.