How we cite our quotes: All quotations are from The Godfather.
Quote #4
DON CORLEONE: 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.
Don Corleone, despite being a gangster, sees that vengeance in this case would be pointlessly destructive. He's accepting that the death of his son was business, even if it grieves him.
Quote #5
DON CORLEONE: […] 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.
Don Corleone is making this decision partly out of defeat, and partly out of wisdom. It shows that he has great self-control—but he'll lose it if Michael dies.