"Words were weapons, his father had taught him that, and he'd wanted to hurt Clary more than he'd ever wanted to hurt any girl. In fact, he wasn't sure he had ever wanted to hurt a girl before. Usually he just wanted them, and then he wanted them to leave him alone."
"What are all these?"Clary asked."Vials of holy water, blessed knives, steel and silver blades,"Jace said, piling the weapons on the floor beside him, "electrum wire - not much use at the moment but it's always good to have spares - silver bullets, charms of protetion, crucifixes, stars of David-""Jesus,"said Clary"I doubt he'd fit.""Jace."Clary was appalled."
"to love is to destroy, and that to be loved is to be the one destroyed."
"That's why when major badasses greet each other in movies, they don't say anything, they just nod. The nod means, 'I' am a badass, and I recognize that you, too, are a badass,' but they don't say anything because they're Wolverine and Magneto and it would mess up their vibe to explain."
"And next time you're planning to injure yourself to get me attention, just remember that a little sweet talk works wonders."
"All knowledge hurts."