Clary Fray: I understand he has demon blood, I know what he's capable of, but... but he's my brother. God, that's stupid, right?

Sebastian Morgenstern: Oh, no. No! God, it's not stupid at all!

Clary Fray: And if there's any humanity left in him, shouldn't we at least try to save him?

Sebastian Morgenstern: I think so.