“One thing you'll learn as you get older, Simon, is that when people tell you something unpleasant about themselves, it's usually true.”

“Simon - "You look happy. And a good thing for you that she does"Jace - "Is this the part where you tell me if I hurt her, you'll kill me?"Simon - "No. If you hurt Clary, she's quite capable of killing you herself. Possibly with a variety of weapons.”

“Mundanes who involve themselves in things they know nothing about are likely to meet unpleasant endings.”

“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 pamplet 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.”

“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.”

“Well, I hate to tell you this," she said, "but your friend is an asshole.""He's not my friend," said Simon. "And I couldn't agree with you more, actually."-Maia & Simon about Jace, pg.49-”

“You can't forget the things you did in the past, or you'll never learn from them.”