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 a nigger's head through a plate-glass window.
Billy Costigan: I'm all set without your own personal job application. Alright, Sergeant?
Dignam: What the fuck did you say to me, trainee?
Billy Costigan: [to Queenan] With all due respect, sir, what do you want from me?
Dignam: Hey asshole, he can't help you! I know what you are, okay? I know what you are and I know what you are not. I'm the best friend you have on the face of this earth, and I'm gonna help you understand something, you punk. You're no fuckin' cop!