Batman: What were you trying to prove? That deep down, everyone's as ugly as you? You're alone.
Joker: Can't rely on anyone these days. You gotta do everything yourself. Don't we? That's okay. I came prepared. It's a funny world we live in. Speaking of which, you know how I got these scars?
Batman: No, but I know how you got these.
Joker: Oh, you. You just couldn't let me go, could you? This is what happens when an unstoppable force...meets an immovable object. You truly are incorruptible, aren't you? Huh? You won't kill me...out of some misplaced sense of self-righteousness. And I won't kill you...because you're just too much fun. I think you and I are destined to do this forever.
Batman: You'll be in a padded cell forever.
Joker: Maybe we could share one. You know, they'll be doubling up...the rate this city's inhabitants are losing their minds.
Batman: This city just showed you...that it's full of people ready to believe in good.
Joker: Until their spirit breaks completely. Until they get a good look at the real Harvey Dent...and all the heroic things he's done. You didn't think I'd risk losing the battle for Gotham's soul...in a fistfight with you? No. You need an ace in the hole. Mine's Harvey.
Batman: What did you do?
Joker: I took Gotham's white knight...and I brought him down to our level. It wasn't hard. See, madness, as you know...is like gravity. All it takes is a little push.
妙語佳句，活學活用
1. rely on: 依靠，取得支持。片中小丑對蝙蝠俠說：“如今真是誰也靠不住了。”來看例句：
Charities rely on voluntary donations. 慈善事業(yè)依靠自愿捐獻。
You can rely on him. 你可以信賴他。
2. let go：放手，放過。片中小丑對蝙蝠俠說：“你就是不能放手讓我死啊。”
Let go of my arms! 放開我的手!
You must learn to let go. 你必須學會放手。
3. double up: 這里是同宿一室的意思。片中小丑對蝙蝠俠說：“我這間可以分你一半。”
Tom and Bill will double up in room 20. 湯姆和比爾住二十號房間。
double up 其他的意思還有（因劇痛或大笑等）彎著身子。比如：
She doubled up in pain.
4. an ace in the hole：備用的應急手段，王牌。小丑對蝙蝠俠說：“你手里得有王牌可打，我這張就是哈維。”來看例句：
George seems awfully confident. He must have an ace in the hole. 喬治似乎非常有信心,他必然有一張備用的王牌。
Don't worry for him. He has an ace in the hole. 別為他擔心. 他留著一手呢。
