Don 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.
Kay Adams: Do you know how naive you sound, Michael? Presidents and senators don't have men killed.
Michael: Oh. Who's being naive, Kay?
Michael Corleone: Never let anyone know what you are thinking.
Michael: Fredo, you're my older brother, and I love you. But don't ever take sides with anyone against the Family again. Ever.
Michael: [speaking to Carlo] Only don't tell me you're innocent. Because it insults my intelligence and makes me very angry.
Michael Corleone: There are many things my father taught me here in this room. He taught me: keep your friends close, but your enemies closer.
Don Altobello: The richest man is the one with the most powerful friends.
Hyman Roth: I'm going to take a nap. When I wake up, if the money is on the table, I'll know I have a partner. If it isn't, I'll know I don't.
Kay Adams: ...
Michael: ...That's a true story.
[cut to Johnny singing again for about 10 more seconds before going back to Michael]
Michael: That's my family Kay, it's not me.
Don Altobello: I've lost the lust for women, and now my mind is clear.
Archbishop Gilday: It seems in today's world the power to absolve debt is greater than the power of forgiveness.