Quoting Jace (Mortal Instruments)

“I was hoping they'd put up flyers like they do for lost cats," he said, "Missing, one stunningly attractive teenage boy. Answers to 'Jace' or 'Hot Stuff.”
― Cassandra Clare, City of Lost Souls

“Don't order any of the faerie food," said Jace, looking at her over the top of his menu. "It tends to make humans a little crazy. One minute you're munching a faerie plum, the next minute you're running naked down Madison Avenue with antlers on your head. Not," he added hastily, "that this has ever happened to me.”
― Cassandra Clare, City of Bones

“Is standing by the window muttering about blood something he does all the time?" asked Simon.
"No," Jace said. "Sometimes he sits on the couch and does it.”
― Cassandra Clare, City of Ashes

“Usually I'm remarkably good natured. Try me on a day that doesn't end in y.”
― Cassandra Clare

“It wouldn't be my move," Jace agreed. "First the candy and flowers, then the apology letters, then the ravenous demon hordes. In that order.”
― Cassandra Clare, City of Bones

“It's not gray," Clary felt compelled to point out. "It's green."
"If there was such a thing as terminal literalism, you'd have died in childhood," said Jace.”
― Cassandra Clare, City of Bones

“If you ever meet the man who could take advantage of Isabelle, you’ll have to let me know. I’d like to shake his hand. Or run away from him very fast, I’m not sure which.”
― Cassandra Clare, City of Glass

“It's so dark,' she said lamely.

'You want me to hold your hand?'

Clary put both her hands behind her back like a small child.

'Don't talk down to me. '

'Well, I could hardly talk up to you. You're too short.”
― Cassandra Clare, City of Bones

“Well, I'd certainly hate to interrupt your pleasant night stroll with my sudden death."

He blinked. "There is a fine line between sarcasm and outright hostility, and you seem to have crossed it. What's up?”
― Cassandra Clare, City of Bones

“The [coat] rack above his head like a javelin.
On the other side of the door was Jace. He blinked. "Is that a coatrack?"
Jordan slammed the coatrack down on the ground and sighed. "If you'd been a vampire, this would have been a lot more useful."
"Yes," said Jace. "Or, you know, just someone with a lot of coats.”
― Cassandra Clare, City of Fallen Angels

“Clary wasn't sure what she'd expected-exclamations of delight, perhaps a smattering of applause. Instead there was silence, broken only when Jace said, "Somehow, I thought it would be bigger."

Clary looked at the Cup in her hand. It was the size, perhaps, of an ordinary wineglass, only much heavier. Power thrummed through it, like blood through living veins. "It's a perfectly nice size," she said indignantly.

"Oh, it's big enough," he said patronizingly, "but somehow I was expecting something… you know." He gestured with his hands, indicating something roughly the size of a house cat.

"It's the Mortal Cup, Jace, not the Mortal Toilet Bowl," said Isabelle.”
― Cassandra Clare, City of Bones

“Oh, come on, Jace," Clary said. "You can't wait for perfect behavior from everyone. Adults screw up too. Go back to the Institute and talk to her rationally. Be a man."
"I don't want to be a man," said Jace. "I want to be an angst-ridden teenager who can't confront his own inner demons and takes it out verbally on other people instead."
"Well," said Luke, "you're doing a fantastic job.”
― Cassandra Clare, City of Ashes

“I will have you know I practiced that speech. In front of a mirror before you got here."
"So what do you think it meant?"
"I'm not sure" Jace admitted, "but I know I look damn good delivering it.”
― Cassandra Clare, City of Lost Souls

“I am with you. I'm not going anywhere."

"Is there anything special you want to see? Paris? Budapest? The Leaning Tower of Pisa?"

Only if it falls on Sebastian's head, she thought. "Can we travel to Idris? I mean, I guess, can the apartment travel there?"

"It can't get past the wards." His hand traced a path down her cheek. "You know,I really missed you."

"You mean you haven't been going on romantic dates with Sebastian while you've been away from me?"

"I tried", Jace said, "but no matter how liquored up you get him , he just won't put out.”
― Cassandra Clare, City of Lost Souls

“The Inquisitor stared at him as if he were a talking cockroach. "Do you know about the cuckoo bird, Jonathan Morgenstern?"

Jace wondered if perhaps being the Inquisitor—it couldn't be a pleasant job—had left Imogen Herondale a little unhinged.

"The cuckoo bird," she said. "You see, cuckoos are parasites. They lay their eggs in other birds' nests. When the egg hatches, the baby cuckoo pushes the other baby birds out of the nest. The poor parent birds work themselves to death trying to find enough food to feed the enormous cuckoo child who has murdered their babies and taken their places."
"Enormous?" said Jace. "Did you just call me fat?"
"It was an analogy."
"I am not fat.”
― Cassandra Clare, City of Ashes


“This is bad," said Jace.
"You said that before."
"It seemed worth repeating."
― Cassandra Clare, City of Bones


“It means 'Shadowhunters: looking better in black than the widows of our enemies since 1234”
― Cassandra Clare

I also speak Russian and Italian. And some Romanian," Sebastian said with a modest smile. "I could teach you some phrases-"

   "Romanian? That's impressive," said Jace. "Not many people speak it."

   "Do you?" Sebastian asked with interest.

   "Not really," Jace said with a smile so disarming Simon knew he was lying. "My Romanian is pretty much limited to useful phrases like, 'Are these snakes poisonous?' and 'But you look much too young to be a police officer."
― Cassandra Clare, City of Glass

“And I remind you of your mother now? I have got to look into a manlier cologne.”
― Cassandra Clare

“Investigation?" Isabelle laughed. "Now we're detectives? Maybe we should all have code names."
"Good idea," said Jace. "I shall be Baron Hotschaft Von Hugenstein.”
― Cassandra Clare, City of Bones

Quoting Simon (Mortal Instruments)

“Jordan doesn't really care about the blood," Simon said now. "His whole thing is about me being comfortable with what I am. Get in touch with your inner vampire, blah, blah."
Clary slid in next to him onto the bed and hugged a pillow. "Is your inner vampire different from your...outer vampire?"
"Definitely. He wants me to wear midriff-baring shirts and a fedora. I'm fighting it."
Clary smiled faintly. "So your inner vampire is Magnus?”
― Cassandra Clare, City of Lost Souls

“Simon rolled his eyes. “It’s a good thing we know the person who’s dating Magnus Bane,” he said. “Otherwise, I get the feeling we’d all just lie around all the time wondering what the hell to do next. Or trying to raise the money to hire him by selling lemonade or something.”
Alec looked merely irritated by this comment. “The only way you could raise enough money to hire Magnus by selling lemonade is if you put meth in it.”
― Cassandra Clare, City of Lost Souls

“What's that you're holding?" he asked, noticing the pamphlet, still rolled up in her left hand.

"Oh, this?" She held it up. "How to Come Out to Your Parents."

He widened his eyes. "Something you want to tell me?"

"It's not for me. It's for you." She handed it to him.

"I don't have to come out to my mother," said Simon. "She already thinks I'm gay because I'm not interested in sports and I haven't had a serious girlfriend yet. Not that she knows of, anyway."

"But you have to come out as a vampire," Clary pointed out. "Luke thought you could, you know, use one of the suggested speeches in the pamphlet, except use the word 'undead' instead of--"

"I get it, I get it." Simon spread the pamphlet open. "Here, I'll practice on you." He cleared his throat. "Mom. I have something to tell you. I'm undead. Now, I know you may have some preconceived notions about the undead. I know you may not be comfortable with the idea of me being undead. But I'm here to tell you that the undead are just like you and me." Simon paused. "Well, okay. Possibly more like me than you."

"SIMON."

"All right, all right." He went on. "The first thing you need to understand is that I'm the same person I always was. Being undead isn't the most important thing about me. It's just part of who I am. The second thing you should know is that it isn't a choice. I was born this way." Simon squinted at her over the pamphlet. "Sorry, reborn this way.”
― Cassandra Clare

“No, you don’t need to help me. But if you don’t, there’s nothing stopping me from calling you up again and again, now that I know you can’t kill me. Think of it as me leaning against your Heavenly doorbell… forever.”
― Cassandra Clare, City of Lost Souls

“Basia conquum," Simon said. "Or whatever their motto is."
"It's 'Descensus Averno facilis est.' 'The descent into hell is easy,'" said Alec. "You just said 'Kiss the cook.'"
"Dammit," said Simon. "I knew Jace was screwing with me.”
― Cassandra Clare, City of Lost Souls

“Patience, grasshopper," said Maia. "Good things come to those who wait."
"I always thought that was 'Good things come to those who do the wave,'" said Simon. "No wonder I've been so confused all my life.”
― Cassandra Clare, City of Glass

“I guess it’s true what they say," observed Jace. "There are no straight men in the trenches."
"That’s atheists, jackass," said Simon furiously. "There are no atheists in the trenches.”
― Cassandra Clare

“The thing about the Mirror is that no one knows where it is. In fact, no one knows what it is.”
"It’s a mirror,” Simon said. “You know – reflective, glass. I’m just assuming.”
― Cassandra Clare, City of Glass