Alec Lightwood: You're an all-powerful warlock who can summon demons. You've lived through centuries of war. And you're immortal. What scares you?
Magnus Bane: The key to having no fear is... having nothing to lose. I don't know. I guess that's why I haven't... opened my heart up for almost 100 years.
Alec Lightwood: What's going on?
Magnus Bane: You tell me, Alexander. From the day I met you, the one thing I knew I could count on from you was honesty. Absolute, total... honesty.
Alec Lightwood: I can explain.
Magnus Bane: You knew about the sword?
Alec Lightwood: I just found out. I swear.
Magnus Bane: When? When did you know? Tonight? When I talked about trust. Did you know then?
Alec Lightwood: I did.
Magnus Bane: When I was tortured in Valentine's body, that agony rune made me relive my worst memory. And now... I can't get it out of my head. Every time I close my eyes...
Alec Lightwood: Hey... What is it?
Magnus Bane: Remember I told you how I found my mother dead by her own hand? My stepfather found me shortly after. He screamed at me. He called me an abomination.
Alec Lightwood: What?
Magnus Bane: He was right. He blamed me for her suicide. He said that she hated herself for giving birth to a monster. So I lashed out. With all the magic I had. I burned him, Alexander. Right where he stood. I murdered my stepfather.
Alec Lightwood: You were just a boy. You weren't in control of your powers.
Magnus Bane: Yes, actually, I was.
Jace Herondale: You're taking over. You, Alec Lightwood, are now the Head of the New York Institute.
Alec Lightwood: Can you do that?
Jace Herondale: Yeah. I mean, like you said, being a Herondale comes with certain perks. Naming a successor is one of them. You were right. Downworlders and Shadowhunters, we're all a mix of human, angel and demon. If we let the Clave forget that... we deserve a revolt. I'll always be a soldier. But you're a leader, Alec.