The Joker: I believe whatever doesn't kill you, simply makes you... Stranger.
The Joker: Introduce a little anarchy. Upset the established order and everything becomes chaos. I'm an agent of chaos. Oh, and you know what the thing about chaos is? It's fair.
Gambol: You think you can steal from us and get away with it?
The Joker: Yeah.
The Joker: Why so serious?
The Joker: Madness is like gravity... All you need is a little push.
Party guest: We're not intimidated by thugs.
Joker: You know, you remind me of my father. I hated my father.
The Joker: You won't kill me out of some mis-placed sense of self-righteousness. And I won't kill you because you're just too much fun.
The Joker: If you are good at something, never do it for free.
Harvey Dent: The night is darkest just before the dawn. And I promise you the dawn is coming.
Bruce Wayne: I knew the mob wouldn't go down without a fight. But this is different. They crossed the line.
Alfred Pennyworth: You crossed the line first, sir. You hammered them. And in their desperation they turned to a man they didn't fully understand. Some men aren't looking for anything logical. They can't be bought, bullied, reasoned or negotiated with. Some men just want to watch the world burn.
Gambol: You're crazy.
The Joker: I'm not. No, I'm not.
[To the group of mobsters.]
The Joker: This suit wasn't cheap. You ought to know; you bought it.
The Joker: You see, it's all part of the plan.
Harvey Dent: What was that name you all had for me down at the D.A.'s office? Say it. SAY IT!
Commissioner Gordon: Two Face, Harvey Two Face. (01:02:20)
The Joker: Wanna know how I got these scars?