“Fate is never fair. You are caught in a current much stronger than you are; struggle against it and you'll drown not just yourself but those who try to save you. Swim with it. and you'll survive”
“You're a disaster for us, Clary! You're a mundane, you'll always be one, you'll never be a Shadowhunter! You don't know how to think like we do, think about what's best for everyone-- all you think about is yourself! But there's a war now, or there will be, and I don't have time or the inclination to follow around after you, trying to make sure you don't get us killed! Go home, Clary. Go home!”
“You can't forget the things you did in the past, or you'll never learn from them.”
“Stop it," he hissed in her ear. "You'll just make it worse for yourself. It's better if you don't look.""Like you do?" she hissed back. "Shutting your eyes and pretending something's not happening doesn't make it not true, Jace. You ought to know better-”
“Let me give you a piece of advice. The handsome young fellow who's trying to rescue you from a hideous fate is never wrong. Not even if he says the sky is purple and made of hedgehogs.”
“I used to think being a good warrior meant not caring,” he said. “About anything, myself especially. I took every risk I could. I flung myself in the path of demons. I think I gave Alec a complex about what kind of fighter he was, just because he wanted to live.” Jace smiled unevenly. “And then I met you. You were a mundane. Weak. Not a fighter. Never trained. And then I saw how much you loved your mother, loved Simon, and how you’d walk into hell to save them. You did walk into that vampire hotel. Shadowhunters with a decade of experience wouldn’t have tried that. Love didn’t make you weak, it made you stronger than anyone I’d ever met. And I realized I was the one who was weak.” –Jace pg. 531-532”
“You have always been what you are. That's not new. What you'll get use to, is knowing it.”