Look at the Magister. He does what he does because he hates the Shadowhunters, out of loyalty to his parents, who cared for him, and who were killed. It is not beyond the realm of understanding. And yet nothing excuses the result. I think when we make choices – for each choice is individual of the choices we have made before – we must examine not only our reasons for making them but what result they will have, and whether good people will be hurt by our decisions.” There.