That's the problem with group dynamics. Different personalities, different agendas.

Prentiss

It seems our gang is becoming unglued faster than we predicted.

Rossi

A gang's where a coward goes to hide.

Mickey Mantle

Prentiss: You did great in San Diego. I'm glad you trusted your gut.
Walker: Thank you for listening. I've been on teams where opinions, especially new ones, aren't always valued.
Prentiss: That's the nice thing about this group. Everybody has a voice.

It's like in music. Sometimes you don't pick the instrument. The instrument picks you.

Walker [to Prentiss]

Walker: Agent Rossi was a mentor when I was coming up, so I'm happy to be here.
Prentiss: He said you're one of the most naturally gifted profilers he's ever seen.

I used to think they were all monsters too. But they're not. They're just men, and occasionally women. Not to respect the people I hunt would be like a soldier not respecting his enemy, and that mistake costs lives.

Rossi

Be careful hunting monsters, lest you become one yourself.

to Rossi}

Prentiss: You keep burning the candle at both ends, there won't be much of you left.
Rossi: Wait a minute, I say that. What are you doing, using my sayings against me?
Prentiss: I am. It's true. That's why it's a good saying. Go get some rest. No case was solved in a day.
Rossi: That's another one.
Prentiss: I know. What do you want? I learned from the best.

Every investigation at this point requires patience and, most of all, focus. All the answers aren't all out there, Most are right here [pointing to his head], and that's the job. That's why we get into the mind of the killer.

Rossi

This job is going to change you, and, not only that, it's going to show you who you really are. Sometimes that's not easy to see.

Rossi

We save lives, and that's what matters. And every life we save is a win. You taught me that.

Walker [to Rossi]