--"Madness is like gravity. All it takes is a little push…".
--"The city deserves a better class of criminal, I am gonna give it to them."
--"If you are good at something, never do it for free."
--"Do I look like someone has a plan? I don’t know how to play with it when I caught it….I just do it."
--The Joker对Batman说:"You complete me!"（这句话忽然让我想起了断臂山。。。）
--"I am a man of simple tastes. I like gunpowder, dynamite, gasoline."
--Joker对Batman说:"To them, you're like a freak like me. They just need you right now. But as soon as they don't, they'll cast you out like a leper. Their morals, their code...It's a bad joke. Dropped at the first sign of trouble. They're only as good as the world allows them to be. You'll see. I 'll show you. When the chips are down, there civilized people... they'll eat each other. See, I'm not a monster. I'm just ahead of the curve."
---"The only sensible way to live in the world is without rules. Tonight,you'll have to break your rule to know the truth."
---"Killing is making a choice. You choose one life over the other, your friend, the district attorney, or his bride to be."
---"Nobody panic when the expected people get killed. Nobody panics when things go according to plan, even if the plan is horrifying. If I tell you the press tomorrow a gangbanger will get shot or a truck of soldiers will be blown up, nobody panics. Because it's all part of the plan. But when I say the old mayor will die, everybody loses their minds!"
---You upset the establised order and everything becomes the chaos! I am an agent of chaos. And you know the thing about chaos? It's fair...."
----The Joker对Batman说:" You just couldn't let me go, could you? I guess this is what happens when an unstoppable force meets an immovable object. Youare truly incorruptible. You won't kill me out of some misplaced sense of righteouness...and I won't kill you because you're too much fun. We're going to do this forever."