Duty is a poor man's responsibility.

Pete: What the hell is the difference between responsibility and duty?

Michael: You taking drugs again?

Pete: No. This guy in A.A last night, he says "Duty is a poor man's responsibility".

Michael: What's he do, this guy?

Pete: Do? I don't f**kin' know. I think he's a lawyer or something.

Michael: Lawyer?... All right, what he mean is this... Duty is what poor slobs like you do to help rich a**holes like him fulfill his responsibilities.

Pete: (slight pause and thinking) So he's calling me a slob?

Michael: Yeah. Why don't you kick the shit out of him next time?

Pete: Motherf**ker.