Kayleigh

“He made it very clear that he didn’t want me here,” she said at last. “That my remaining at the Institute is not the happy chance I thought it was. Not in his view.”
“And after I just finished telling you why you should consider him family,” Jem said, a bit ruefully. “No wonder you looked as if I’d just told you something awful just happened.”
“I’m sorry,” Tessa whispered.
“Don’t be. It’s Will who ought to be sorry.” Jem’s eyes darkened. “We shall throw him out onto the streets,” he proclaimed. “I promise you he’ll be gone by morning.”
Tessa started and sat upright. “Oh – no, you can’t mean that─”
He grinned. “Of course I don’t. But you did feel better for a moment there, didn’t you?”
― Cassandra Clare, Clockwork Angel

“Remember when you tried to convince me to feed a poultry pie to the mallards in the park to see if you could breed a race of cannibal ducks?"

"They ate it too," Will reminisced. "Bloodthirsty little beasts. Never trust a duck.”
― Cassandra Clare, Clockwork Angel

“Will’s voice dropped. “Everyone makes mistakes, Jem.”
“Yes,” said Jem. “You just make more of them than most people.”
“I —”
“You hurt everyone,” said Jem. “Everyone whose life you touch.”
“Not you,” Will whispered. “I hurt everyone but you. I never meant to
hurt you.”
Jem put his hands up, pressing his palms against his eyes. “Will —”
“You can’t never forgive me,” Will said in disbelief, hearing the
panic tinging his own voice. “I’d be —”
“Alone?” Jem lowered his hand, but he was smiling now, crookedly. “And
whose fault is that?”
― Cassandra Clare, Clockwork Prince

“Will: "Nice place to live, isn't it? Let's hope they left something behind other than filth. Forwarding addresses, a few severed limbs, a prostitute or two ..."
Jem: "Indeed. Perhaps, if we're fortunate, we can still catch syphilis."
"Or demon pox," Will suggested cheerfully, trying the door under the stairs.”
― Cassandra Clare, Clockwork Angel