Will suspected Jem was in fact cleverer than he was himself - but he lacked Will's tendency to assume the absolute worst about people and proceed from there.

Children of the Nephilim," Magnus said. "Well, well. I don't recall inviting you." Isabelle took out her invitation and waved it like a white flag. "I have an invitation. These"--she indicated the rest of the group with a grand wave of her arm--"are my friends." Magnus plucked the invitation out of her hand and looked at it with fastidious distaste. "I must have been drunk," he said. He threw the door open. "Come in. And try not to murder any of my guests." Jace looked at him, "Even if one of them spills something on my new shoes?" "Even then." - 219

They say time heals all wounds, but that presumes the source of the grief is finite

I learned to share work with people even when it was in its rough stages without worrying that they'd be filled with scorn and hatred. After all, I can read their rough work without turning on them like a wildebeest.

Despite the heat in her face, it felt as if cold needles of ice were running up and down her veins. "What are you doing here?" He drew back slightly, looking disappointed. "That isn't really an answer to my question, you know. I was expecting more of a "Hallelujah Chorus.' I mean, it's not every day your boyfriend comes back from the dead." "I already knew you weren't dead." She spoke through numb lips. "I saw you in the library. With--" "Colonel Mustard?" "Sebastian.

Jem--Jem is all the better part of myself. I would not expect you to understand. I owe him this." "Then what am I?" Cecily asked. Will exhaled, too exasperated to check himself. "You are my weakness." "And Tessa is your heart," she said, not angrily, but thoughtfully. "Not a fool, as I told you," she added at his startled expression. I know that you love her.

Magic is dangerous- but love is more dangerous still