Officer Russell should have taken the one and a half seconds that stood between a knife and his throat and asked this Diego Perez character, Hey, how you feeling?

Danny: Well, the good news is none of us is ever going to end up alone.
Erin: Not while another one of us is still standing.

You're the best cop I know, alright, and you can teach him things that I can't.

Ok, is there anyone here who didn't kill him?

This thing is going to haunt you until you put it down.

Danny: You're like the pope of cops.
Jamie: You're infallible.

Linda: Hey, how was your day.
Danny: Same as usual. Ridding the city from the forces of evil.

For him moving on is going to be less like letting go and more like letting go of an arm or a leg. If he needs our support he's going to need our support to let go. Support is only worth what it costs you to give it.

Baez: Everything okay?
Danny: Nothing is.

I'll be discreet, I promise. I left my bullhorn and machine gun in the car.

Danny: Can't save everyone.
Jamie: We can try.

Baez: She said no, huh?
Danny: Of course she said no, it's her favorite word.