Frank Costello: When you decide to be something, you can be it. That's what they don't tell you in the church. When I was your age they would say we can become cops, or criminals. Today, what I'm saying to you is this: when you're facing a loaded gun...
Lazio: Do you have anyone in with Costello presently? Dignam: Maybe. Maybe not. Maybe fuck yourself.
[first lines] Frank Costello: I don't want to be a product of my environment. I want my environment to be a product of me. Years ago we had the church. That was only a way of saying - we had each other. The Knights of Columbus were real head-breakers...
Ellerby: Go fuck yourself. Dignam: I'm tired from fucking your wife. Ellerby: How is your mother? Dignam: Good, she's tired from fucking my father.
Dignam: This is unbelievable. Who put the fuckin' cameras in this place? Police Camera Tech: Who the fuck are you? Dignam: I'm the guy who does his job. You must be the other guy.
Ellerby: I'm gonna go have a smoke right now. You want a smoke? You don't smoke, do ya, right? What are ya, one of those fitness freaks, huh? Go fuck yourself.
Madolyn: Why is the last patient of the day always the hardest? Billy Costigan: Because you're tired and you don't give a shit. It's not super-natural.
Oliver Queenan: Do you know what we do here? My section? Billy Costigan: Sir, yes, sir. I have an idea... Dignam: [interrupting] Whoa, whoa, whoa. Let's say you have no idea and leave it at that, okay? No idea. Zip. None. If you had an idea of what w...
Dignam: My theory on Feds is that they're like mushrooms, feed 'em shit and keep 'em in the dark
[upon learning the Police have found Delahunt's body and that he was a cop] Fitzy: I don't believe it. Mr. French: What can't you believe? Fitzy: I spent all fucking night dragging the poor bastard in there. Tell me how they find him so fast? Somebod...
Frank Costello: Who let this IRA motherfucker in my bar? [the man looks startled] Frank Costello: [laughs] Only kidding. How's your mother? Man in Costello's Bar: Oh... I'm afraid she's on her way out. Frank Costello: [walks away] We all are. Act acc...
Oliver Queenan: We have a question: Do you want to be a cop, or do you want to appear to be a cop? It's an honest question. A lot of guys just want to appear to be cops. Gun, badge, pretend they're on TV. Dignam: Yeah, a lot of people just wanna slam...
Frank Costello: One of us had to die. With me, it tends to be the other guy.
Oliver Queenan: Congratulations on passing the detectives' exam, and welcome to the Special Investigation Unit. Dignam: Whoop-de-fuckin'-do.
Frank Costello: Have a seat, Bill. [Costigan sits down at Costello's dinner table] Frank Costello: [while eating crab] Do you know John Lennon? Billy Costigan: Yeah, sure, he was the president before Lincoln. Frank Costello: Lennon said, "I'm an arti...
Ellerby: Staff Sergeant Dignam is our liaison to the the undercover department, his undercover work is extensive. He's here to give us his report. Sergeant Dignam. Dignam: Ok. My people are out there. They're like fuckin' indians. You're not gonna se...
Frank Costello: [slams a fly on the table] You know what I like about restaurants? Billy Costigan: The fucking food. I don't know, what? Frank Costello: You can learn a lot, watching things eat. [licks fly off palm]
[Sullivan tries to enter Queenan's office, but Dignam blocks his way] Colin Sullivan: Problem? Dignam: Yeah, I got a problem. I run rat fucks like you, okay? I don't like 'em. Colin Sullivan: The day you wouldn't take a promotion, let me know. And if...