- "Friendship with you is an ethical obligation." Interesting line. I'm still not sure what I think it means.

I'm not sure either. That his friendship with House is more important to him than his career? That friendship in general is more important to him? (I like, though, that he made it about friendship with House, not just the more general concept.) That he feels obligated to stay friends with House (because he knows House doesn't have anyone else, maybe), even when he's pissed at him and wants to walk away? I actually am happy with any or all of these explanations. *g*