· 为了能够更好地诠释“小丑”,希斯·莱杰独自一人在酒店的房间里待了一个月的时间,分析这个角色的心理状态、姿态和声音--他发现声音是最难模仿的。另外,莱杰还开始写日记,记录的都是他在这一个月体会到的“小丑”的想法和感觉,以方便他在拍摄的时候备用。莱杰还看了艾伦·摩尔(Alan Moore)创作的漫画系列《蝙蝠侠:致命的玩笑》(Batman: The Killing Joke)和《Arkham Asylum: A Serious House on Serious Earth》,并从1971年的影片《发条橘子》中的亚历克斯以及已经去世的摇滚明星席德·维瑟斯那里借鉴了许多个性特征。
The Joker: Starting tonight... people will die. I'm a man of my word.
小丑:今晚开始……人们将会死去,我是个说话算数的人。
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.
Harvey Dent: Rachel's told me everything about you.
Bruce Wayne: I certainly hope not.
哈维·登特:雷切尔告诉了我有关你的一切。
布鲁斯·韦恩:我不希望如此。
Gotham National Bank Manager: The criminals in this town used to believe in things. Honor. Respect. Look at you! What do you believe in? What do you believe in!
The Joker: I believe whatever doesn't kill you simply makes you... stranger.