Tom Hagen: Mr. Corleone never asks a second favor once he’s refused the first, understood?
Michael Corleone: I’ll make him an offer he can’t refuse.
Michael: It’s not personal, Sonny. It’s strictly business.
Michael: Fredo, you’re my older brother, and I love you. But don’t ever take sides with anyone against the Family again. Ever.
Clemenza: Leave the gun. Take the cannolis.
Fabrizio: In Sicily, women are more dangerous than shotguns.
Michael Corleone: My father is no different than any powerful man, any man with power, like a president or senator.
Kay Adams: Do you know how naive you sound, Michael? Presidents and senators don’t have men killed!
Michael Corleone: Oh. Who’s being naive, Kay?
Bonasera: I believe in America. America has made my fortune.
Michael Corleone: That’s my family, Kay. It’s not me.
Vito Corleone: Do you spend time with your family? Good. Because a man that doesn’t spend time with his family, can never be a real man.
Tom Hagen: Now we have the unions, we have the gambling; and they’re the best things to have. But narcotics is a thing of the future. And if we don’t get a piece of that action, we risk everything we have. I mean not now, but, ah, ten years from now.
Vito Corleone: You talk about vengeance. Is vengeance going to bring your son back to you? Or my boy to me?
Don Vito Corleone: What have I ever done to make you treat me so disrespectfully? If you’d come to me in friendship, then this scum that ruined your daughter would be suffering this very day. And if by chance an honest man like yourself should make enemies, then they would become my enemies. And then they would fear you.
Vito Corleone: I like to drink wine more than I used to.
Michael: It’s good for ya, Pop.
Vito Corleone: Anyway I’m drinkin’ more.