Tyrion: I must say I received a slighter warmer welcome on my last visit. Robb: Any man of the Night's Watch is welcome at Winterfell. Tyrion: Any man of the Night's Watch but not I, eh boy? Robb: I'm not your boy, Lannister. I'm Lord of Winterfell while my father is away. Tyrion: Then you might learn a Lord's courtesy.
Tyrion: Let me give you some advice bastard. Never forget what you are. The rest of the world will not. Wear it like armor, and it can never be used to hurt you. Jon: What the hell do you know about being a bastard? Tyrion: All dwarfs are bastards in their father's eyes.