Rochefort: I failed. One does occasionally.
Cardinal Richelieu: If I blundered as you do, my head would fall.
Rochefort: I would say from a greater height than mine, Eminence.
Cardinal Richelieu: You would?
Rochefort: The height of vaulting ambition.
Cardinal Richelieu: You have none?
Cardinal Richelieu: Do you fear me, Rochefort?
Rochefort: Yes, I fear you, Eminence. I also hate you.
Cardinal Richelieu: I love you, my son. Even when you fail.
Porthos: May one ask - delicately - the cause in which we're expected to die?
Aramis: When you go on a campaign, does the King give his reasons? He says, "Porthos, fight!" and you fight.
Porthos: Oh, I do, I do.
Aramis: Then let's go and be killed where we're told to! Is life worth so many questions?
D'Artagnan: Now, that man in his time has insulted me, broken my father's sword, had me clubbed to the ground, laid violent hands on the woman I love! He is inconvenient.
Duke of Buckingham: How can I ever repay you?
D'Artagnan: My Lord, let us understand one another. You are an Englishman and an enemy of France. You owe me no debt. What I have done, I've done for the Queen.
D'Artagnan: Oh, my-my darling, forgive me. I, uh, my lord, what can I say? I-I love her, and I was jealous.
Duke of Buckingham: A perfectly excellent reason for attacking a stranger in the dark. Would you oblige me in a small matter, sir?
D'Artagnan: Anything, my Lord.
Duke of Buckingham: Madam and I are going to the palace. We must not be seen. If anyone should try to follow us, would you be good enough to kill him? Thank you.