“Just take the weapon you hold in your hand and drive it through his heart," Valentine's voice was soft. "One simple motion. Nothing you haven't done before."Jace met his father's stare with a level gaze. "I saw Agramon," he said. "It had your face.""You saw Agramon?" The Soul-Sword glittered as Valentine moved toward his son. "And you lived?""I killed it.""You killed the Demon of Fear, but you won't kill a single vampire, not even at my order?"Jace stood watching Valentine without expression. "He's a vampire, that's true," he said. "But his name is Simon.”

“I thought you hated demons. Now you use them like servants. The Ravener, the Drevak demons, Agramon-they‘re your employees. Guards, butler-personal chef, for all I know.”-Jace to Valentine, pg.260-”

“You look happy," he said to Clary. He swiveled his gaze to Jace. "And a good thing for you that she does."Jace raised an eyebrow. "Is this the part where you tell me that if I hurt her, you'll kill me?""No," said Simon, "If you hurt Clary, she's quite capable of killing you herself. Possibly with a variety of weapons."Jace looked pleased by the thought.”

“Sebastian just smiled. “I could hear your heart beating,” he said softly. “When you were watching me with Valentine. Did it bother you?”“That you seem to be dating my dad?” Jace shrugged. "You’re a little young for him, to be honest.”“What?” For the first time since Jace had met him, Sebastian seemed flabbergasted.”

“And when Jace was ten years old, Valentine killed him. Michael,I mean.""That sounds like something he would do," said Luke. His tone was neutral, but there was something in his voice that made Clary look at him sideways. Did he not believe her?"Jace saw him die, " she added, as if to bolster her claim."That's awful," said Luke. "Poor messed-up kid.”

“There were only ever two kinds of people in the world for Valentine," she said "Those who were fir the Circle and those who were against it. The latter were his enemies, and the former were his weapons in his arsenal. I saw him try to turn each of his friends, even his own wife, into a weapon for the Cause—and you want me to believe he wouldn't have done the same with his own son?" She shook her head. "I knew him better than that." For the first time, Maryse looked at him with more sadness than anger. "You are an arrow shot directly into the heart of the Clave, Jace. You are Valentine's arrow. Whether you know it or not.”