Isabelle Lightwood: Clary, Seelie magic might trick you, but it's always true. I know it's confusing. But you can have feelings for two people at the same time. It doesn't make you a bad person.
Isabelle Lightwood: I'm in recovery now. I'm gonna be okay.
Maryse Lightwood: I am so sorry. This is all my fault.
Isabelle Lightwood: No, Mama. It's mine.
Maryse Lightwood: I've been so hard on you. Put so much pressure. Of course you needed a release... Sometimes our angelic duty seems to... overshadow everything else. We forget we're human, too.
Isabelle Lightwood: Mom, you deserve to be happy.
Maryse Lightwood: So do you. Despite this, despite everything, I hope you don't give up on love. I hope you fight for it, like your brother.
Isabelle Lightwood: You don't know my mom. She expects nothing less than perfection. Always. Sometimes I wonder if I could ever live up to it.
Sebastian Verlac: You know, maybe that's the attitude that got you hooked in the first place?
Isabelle Lightwood: I don't want to disappoint her.
Sebastian Verlac: Izzy, it's... it's okay to struggle. Life is a struggle. The point is that you are in recovery, and you are succeeding. Quite well, I might add.
Raphael Santiago: I’m… not like that. I’m just not interested in sex.
Isabelle Lightwood: Being a vampire made you this way?
Raphael Santiago: No. I’ve always been like this.
Isabelle Lightwood: You staying out of trouble?
Simon Lewis: Well, I haven’t been kidnapped in a while, so…
Isabelle Lightwood: Quite an accomplishment.
Clary Fray: We can do it together.
Isabelle Lightwood: I’m kind of over this whole togetherness thing.
Jace Wayland: You always wanted to be an Iron Sister when you were a kid, huh?
Isabelle Lightwood: Until I realized I had to swear off boys.
Isabelle Lightwood: I know you’re obnoxious and stubborn…
Alec Lightwood: I hope you’re going somewhere with this.
Isabelle Lightwood: But you’re also loyal and honest and a big old softie when you stop worrying about what people are thinking about you. One day, somebody’s gonna love you, heart and soul. If you walk away from Jace, you might never find another parabatai. Is that really a risk you’re willing to take?
Jocelyn Fray (to Alec): According to Luke, you need to stay near the surface. If you go too deep, nothing can bring you back.
Isabelle Lightwood: If you go too deep, by the Angel, Alec, I will kick your ass when you get back.