“Simon bristled. She wasn’t his Isabelle, not anymore. He wondered if she ever truly had been. Isabelle didn’t seem like the type of girl to belong to someone. It was one of the things he liked best about her.”

“Isabelle was holding an umbrella. It was clear plastic, decorated with decals of colorful flowers. It was one of the girliest things Simon had ever seen, and he didn’t blame Alec for ducking out from under it and taking his chances with the rain.”

“"Where's Simon?" Clary interrupted.
Isabelle wobbled. "He's a rat," she said darkly.
"Did he do something to you?" Alec was full of brotherly concern. "Did he touch you? If he tried anything-"
"No, Alec," Isabelle said irritably. "Not like that. He's a rat"”

“He leaned against the door frame, ignoring the kick of adrenaline the sight of her produced. He wondered why, not for the first time. Isabelle used her beauty like she used her whip, but Clary didn't know she was beautiful at all. Maybe that was why.”

“He looks," Simon had once said to Isabelle, "like he's thinking about something deep and meaningful, but if you ask him what it is, he'll punch you in the face.”

“Isabelle," she said, lightening her tone with an obvious effort, "your loyalty to your friend is understandable --"
"He's not my friend." Isabelle looked over at Jace, who was staring at her in a sort of daze. "He's my brother.”

“Okay. I've got a good one." Simon stroked Isabelle's hair feeling her lashes flutter against his neck as she closed her eyes. "A long time ago, in a galaxy far, far away.”

“What's this?" he demanded, looking from Clary to his companions, as if they might know what she was doing there.
"It's a girl," Jace said, recovering his composure. "Surely you've seen girls before, Alec. Your sister Isabelle is one.”

“Emily looked at him for a long time. There were so many things she wanted to know—but she wanted not to know them even more. She didn’t want any more answers. He had been the one thing she could trust, the one person she could rely on. She wanted to beg him to be that way again. But it wasn’t him who had changed. It was her. It was her own credulity she really wanted back. And credulity, like virtue, could be lost only once.”

“For the first time, he looked at her, and she wasn’t a stranger, she was Clary—his friend. His family. The girl he’d sworn always to protect. The girl he loved as fiercely as he loved himself.”