How could he do this?

How could Achilles just stand by and let Briseis be taken, be stolen by Agamemnon? For what, honour? He knew it was wrong, but his pride had been hurt. And it was showing he didn’t take such thing lightly

“Leave it, Patroclus.” he insisted. You, Patroclus, were heart broke of how cold Achilles was acting and now both of you were arguing

how could he do this to Briseis? How could he refuse to fight, knowing the amount of destruction this would cause?