Demonic activity levels? Do they have a device that measures whether the demons inside the house are doing power yoga?

They landed at Simon's feet. "Take your clothes and go!" Isabelle shouted.

Unhappy? I was lucky. So, so lucky. And I couldn’t see it.” His eyes met hers. “I love you,” he said. “And you make me happier than I ever thought I could be. And now that I know what it’s like to be someone else—to lose myself—I want my life back. My family. You. All of it.” His eyes darkened. “I want it back.

Magnus got to his feet. “I do believe that's my cue to leave as well,” he said. Clary noticed he was avoiding looking at Alec. “I'd say it's been nice meeting you all, but, in fact, it hasn't. It's been quite awkward, and frankly, the next time I see a single one of you will be far too soon.

Being remembered, and remembered so kindly, touched him more than he would have thought possible.

Will bounded up onto one of the ladders and yanked a book off the shelf. "I'll find you something else to read. Catch." He had let it fall without looking and Tessa had to dart forward to seize it before it hit the floor. - Clockwork Angel

It is the mundanes who look at me and see something they do not understand—a boy who is not quite white and not quite foreign either." "Just as I am not human, and not demon either," Tessa said softly. His eyes softened. "You are human," he said. "Never think you are not. I have seen you with your brother; I know how you care for him. If you can feel hope, guilt, sorrow, love—then you are human.