Oldboy (2003)

Woo-jin Lee: Dae-su Oh talks too much.

Dae-su Oh: I thought I'd lived a simple life. But I've sinned too much.

Woo-jin Lee: My sister and I loved each other, despite everything. Can you do the same?

Woo-jin Lee: And now... now, what joy will I have left to live for?

Dae-su Oh: How's life in a bigger prison, Dae-su?

Mr. Park: We put a hypnosis-inducing drug in your water.
Dae-su Oh: Sodium barbiturate?
Mr. Park: Ha! TV Man knows it all.

Woo-jin Lee: Remember this: "Be it a rock or a grain of sand, in water they sink as the same."

Woo-jin Lee: You really are the very monster I created, aren't you? But you won't find out the "why" of this if you kill me. Fifteen years of being curious would go to waste.

Dae-su Oh: Please. Don't tell Mido. What has she done wrong? You know it was all my fault... I have committed an unforgivable sin, against your sister. And I also... Did you wrong. But, please leave Mido alone... If by any chance Mido finds out the truth, you son of a bitch, I'll tear you limb from limb. And your remains will never be found. Why? Because I'm going to swallow every last bit.

Woo-jin Lee: I'm going to kill every woman you love until you die. You're notorious for not protecting your women.

Dae-su Oh: You need not worry about the future, Imagine nothing.

Dae-su Oh: When the melody turns on, gas comes out. When the gas comes out, I fall asleep. I found out later it's the same Valium gas the Russians used on those Chechen terrorists.

Mi-do: Dae Su. In front of me is some kind of box. He's telling me to open it. It's the same violet box.
Dae-su Oh: No! No Mi-do don't. Don't open it no matter what. Or something terrible will happen.

Woo-jin Lee: What I am isn't important. WHY is important.

Dae-su Oh: Revenge is good for your health, but pain will find you again.

Woo-jin Lee: My sister and I loved each other, despite everything. Can you two do the same?

Mr. Park: You see, they say that people shrivel up because they have an imagination. So, don't imagine anything, you'll become brave as hell.

Dae-su Oh: Laugh and the world laughs with you. Weep and you weep alone.

Woo-jin Lee: Mister. Are you all right? What happened to you? Saewoon Apartments, Eung-am building 8. Take care of him.
Dae-su Oh: Thank You.
Woo-jin Lee: Not at all. Well, then. Farewell, Oh Dae Su.
Dae-su Oh: Farewell, Oh Dae Su.

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.