" Oh, Mark Blackthorn, what are they doing to you?” Simon whispered.
He could not keep the pity out of his voice, and he saw it sting Mark: the slow flush that rose to his thin cheeks, and the way he lifted his chin, holding his head high.
He said: “Nothing I cannot bear.”
Simon was silent. He did not remember everything, but he remembered how much he had been changed. People could bear so much, but Simon did not know how much of the original you was left when the world had twisted you into a whole different shape. "

― Cassandra Clare , Tales from the Shadowhunter Academy