Fusco: Hey, I'm checking on the boy genius. Not you, the other one.
Finch: I hope you have your service weapon with you, Detective.
Fusco: Yeah, I got you a machine gun too.
Finch: Your mistakes, like mine, are part of who you are now. You can't move on from that. Believe me. I've made a sizable number. But... sometimes your mistakes can surprise you. My biggest mistake, for instance... brought me here. At exactly this moment when you might need some help.
Caleb Phipps: Yeah? Then what's the use. We're just gonna keep breaking things... over and over. Why not save everyone the grief?
Finch: The thing about the worlds is that it doesn't have any extra pieces. It's like pi. It contains everything. ou remove a single piece... no circle. Your recklessness, your mistakes, are the reason why, when they say, "You can't change the world," you won't listen. The world is better off with both of us in it, Caleb, rather than the alternative.