The Godfather

Sonny: "Hey, listen, I want somebody good, and I mean very good, to plant that gun. I don't want my brother coming out of that toilet with just his dick in his hands, alright?"
Clemenza: "The gun'll be there."

"Listen, whoever comes to you with this Barzini meeting, he's the traitor. Don't forget that."

"You talk about vengeance. Is vengeance going to bring your son back to you, or my boy to me? I forgo the vengeance of my son. But I have selfish reasons. My youngest son was forced to leave this country because of this Sollozzo business. All right, now I have to make arrangements to bring him back here safely cleared of all these false charges. But I'm a superstitious man, and if some unlucky accident should befall him... if he should be shot in the head by a police officer, or if he should hang himself in his jail cell, or if he's struck by a bolt of lightning, then I'm going to blame some of the people in this room, and that I do not forgive. But, that aside, let me say that I swear, on the souls of my grandchildren, that I will not be the one to break the peace we have made here today."

"I don't like violence, Tom. I'm a businessman; blood is a big expense."

Sonny: "What the hell is this?"
Clemenza: "It's a Sicilian message. It means Luca Brasi sleeps with the fishes."

"Mr Corleone is a man who insists on hearing bad news at once."

"Leave the gun. Take the cannoli."

'I understand. You found paradise in America. You had a good trade, you made a good living. The police protected you and there were courts of law. So you didn't need a friend like me. Now you come and say 'Don Corleone, give me justice'. But you don't ask with respect. You don't offer friendship. You don't even think to call me 'Godfather'. You come into my house on the day my daughter is to be married and you ask me to do murder - for money."