Casey: The CIA created one of the most murderous men in the history of the world. Powerful people spending an enormous amount of energy covering that up. If they find out we know they order a guy like me to put a bullet in each one of our heads. Pretty sure your dad didn't want this to end that way.

Casey: This is how this is gonna work. I'm gonna go over there, rescue Sarah, capture Dr. Zarnow, shoot anybody who gets in my way. You, you're gonna stay here.
Chuck: So in this plan I basically do nothing?
Casey: Yup.
Chuck: [dramatically] ...Let's do this.

Casey: Walker and Shaw knew you were in over your head. They went to fix dinner for your date.
Chuck: They did, huh?
Casey: Yeah. Weird huh? Walker helping you to get laid.

Casey: Walker.. A word please.
Sarah: Can it wait?
Casey: No.
Sarah: He's not talking... and he's a smirker.
Casey: You know just because I helped you bring him here doesn't mean I'm giving you free reign. You need to cool down. Get some rest.
Sarah: I'm not going anywhere.
Casey: I was wrong about you. You're not acting like a worried girlfriend. No, you're acting like a spy I used to know. Before Chuck. Langston Graham's "wild card enforcer." I didn't like that Sarah Walker. You know why? Because she was unpredictable. Now you're going to go home. I insist.

Casey: Well, should I pop some popcorn or beat the answer out of you?
Bryce: No thanks, I'll talk.
Casey: Darn.

Casey: Why's it so important to you Chuck? Why the hell do you care so much about me and Ilsa?
Chuck: I don't...I don't know man, OK, I juse-I think it'd be nice to know that you had a life before...this. I just figure that if a guy like you can find love, no offense, Casey, then maybe there's hope for me too, maybe this spy business isn't as screwed up as I think it is.
Casey: Hmmm.
Chuck: Hmmm? That's, that's okay, you know what? If you want to go through life all emotionally constipated and alone then suit yourself. I'll let you go back to protecting the greater good you freaking robot!
Casey: I met her in a flower market. In Rome. Ilsa was the most beautiful thing I'd ever seen.
Chuck: I knew it. IT'S ALIVE!

Casey: Yogurt time, let's go.
Chuck: Most important meal of the day.

Casey: You ever have sex with someone who's just tried to kill you? It's incredible.

Casey: You stole my blood.

Casey: You sure it was Magnus you saw?
Chuck: Gee, I don't know, Casey, how many psycho archers do you know?

Casey: You! What do I have to do to get timely intel out of you, Bartowski?
Chuck: Look, I briefed Sarah last night, alright?
Casey: [sarcastically] Oh, I bet you did, slugger.
Chuck: I thought we're all suppose to be part of the same team here, huh, Team Chuck?
Casey: We are, but I'm starting to feel like the guy that always gets picked last, and I don't like feeling like Team Chuck's little fat kid!

Casey: You're Chuck Bartowski, you're the second best spy I've ever worked with. Go save the best one.

Casey: You're not serious think that new clothes are gonna somehow make me, less me, do you?!
Big Mike: What I do know, Is to get your head right, you gotta get your threads right. Now get on the box and let Clarence put new feathers on you.

Chuck: [About Alex] Still haven't told Casey yet, huh?
Morgan: No.
Chuck: Well, be careful how you break the news to him. He might kill you accidentally.

Chuck: [about his secret way of communicating with Sarah] Right now, she's telling me she loves me. Or she's buying a Buick...I can't really tell.