Dae-su Oh: Laugh and the world laughs with you. Weep and you weep alone.
Woo-jin Lee: Remember this: "Be it a rock or a grain of sand, in water they sink as the same."
Dae-su Oh: Even though I'm no more than a monster - don't I, too, have the right to live?
Dae-su Oh: If they had told me it was going to be fifteen years, would it have been easier to endure?
Woo-jin Lee: Your gravest mistake wasn't failing to find the answer. You can't find the right answer if you ask the wrong questions.
Dae-su Oh: Can 10 years' worth of imaginary training... be put to use?
Dae-su Oh: [Dae-su beats up his assailants] Apparently, it can.
Dae-su Oh: [on receiving three chopsticks with his prison rations] All I could think about in that moment was the guy in the next room was eating with only one chopstick.
Dae-su Oh: [after getting knocked over and taking a drag of a cigarette] "Dick-shit"... a new word. Television doesn't teach you swear words.
Dae-su Oh: Can the imaginary training of fifteen years be put to use?
Dae-su Oh: [Dae-su tries to sexually assault Mi-do and gets clobbered] No. It can't.
Dae-su Oh: [after a huge fight] As I expected, I can't get along with anyone today either.
Dae-su Oh: Who the hell are you?
Woo-jin Lee: Me? I'm a sort of scholar. And my major is you. A scholar studying Dae-su Oh; an expert on Dae-su Oh.
Mi-do: [looking around the inside of Dae-su's "cell"] You stayed in a place like this for fifteen years?
Dae-su Oh: Yeah, but after the first eleven it felt like home.
Dae-su Oh: How's life in a bigger prison, Dae-su?
Woo-jin Lee: Your tongue got my sister pregnant! It wasn't Woo-jin Lee's dick; it was Dae-su Oh's tongue!
Dae-su Oh: You need not worry about the future, Imagine nothing.
Dae-su Oh: Why'd you lock me up, you
[tries to think of the word]
Dae-su Oh: ... dick-shit?
Dae-su Oh: If by any chance Mido should find out the truth, you son of a bitch, I'm going to rip you limb from limb. And your remains will never be found. Why? Because I'm going to swallow every last bit.
Woo-jin Lee: You want to torture me, but I can simply kill myself first. Do you want revenge, or do you want the truth?