Carrie: Why do you insist on meeting me here? And don't tell me it's the food.
Gibbs: Good people. Honest people. Hungry people. Club sandwich isn't half bad.
Carrie: I'm sorry about your dad.
Gibbs: He would have loved to have met you.
Carrie: Rumor has it he was as challenging as his son.
Gibbs: Yeah well, there's an understatement.
Carrie: I like a good challenge.

Friedgen: You've got to understand. I didn't do anything. I'm innocent, but nobody believes me. Everyone thinks I'm guilty of murder and got off on a technicality.
Clark: The police aren't looking for anyone else, Gibbs.
Gibbs: What do you want me to do?
Friedgen: I want NCIS to arrest me for murder. I want the truth to come out. I deserve my day in court, sir. I want to be court-martialed.

Here. Sit down. You talk, I'll listen.

Bishop: All we know for sure is that he went to college with Amanda Kendall. His murder could be a coincidence.
Gibbs: McGee.
McGee: Rule 39, Bishop.
Bishop: Right. No such thing as a coincidence. I knew that one.

SecNav: How do you do it? It's like pigs at the trough.
Gibbs: In some places it really is a trough.

Never get personally involved on a case. (Season 7, Episode 21)

Rule #10

Sometimes you're wrong. (Season 7, Episode 24, titled "Rule Fifty-One")

Rule #51

Gibbs: How's your love life, DiNozzo?
Tony: Huh?
Gibbs: You still seeing the secretary?
McGee: He means Andrea.
Bishop: Andrea. Hmm. Who's Andrea?
Tony: Andrea. Oh yeah. Yeah. She's uh, I mean, it's kind of on an as-needed basis.
Pride: Friends with benefits?
Gibbs: Yeah well those aren't benefits like dental insurance.

Meade: I'd watch your tone, Agent Gibbs. I don't think SecNav would appreciate NCIS treating an Admiral like a criminal.
Gibbs: Oh, we already talked to SecNav. How did she phrase it?
Hollis: Nail the son of a bitch.
Meade: For what?
Hollis: Killing Lieutenant Kutzler's first Medal of Honor nomination.

Craig: Leon. Good to see you. I didn't know you're coming by for a visit.
Vance: I'm not visiting, I'm here to work.
Craig: Oh, okay. Let me just grab some things from your office...
Vance: No need. I'll be down here. With them.

Gibbs: What's that?
Ducky: His liver, riddled with inoperable tumors. It doesn't appear to have been under treatment. I'd have given him six months.
Gibbs: Made killing himself easier.
Ducky: Pity does not validate cowardice.

Vance: Yes, I'm still in charge. Now get back to work. You're stuck with me.
Gibbs: Change is hard.

NCIS Quotes

McGee: All right. Well you should probably know that Abby and I used to date?
Bishop: Ew. Like, each other?
McGee: Yeah.
Bishop: Wait - isn't that a violation of rule 12, never date a....
McGee: It was a long time ago. After we'd broken up, one night I went to her lab. Found a scribbled piece paper; a list. Potential boyfriends had to fulfill certain conditions by a pre-arranged date or else, goodbye.
Bishop: Such as.
McGee: Things started off relatively normal: opening the door for her, flowers, putting the seat down. Then around number 8, it gets uh...
Bishop: What?
McGee: Does she know you have these?
Bishop: Does she know you have these?
McGee: Yeah she wasn't happy when she found out.
Bishop: These are all very specific.
McGee: Yeah.
Bishop: These ideas apply to you?
McGee: No those rules weren't in place when we were together. At least I don't think so.
Bishop: What's with the two month cutoff? Abby's sabotaging herself. I've seen stuff like this before. We have to talk to her.

Tony: One other question, I know you're an expert in English history. And I was just wondering, have you ever heard of Archibald Drummond, the 17th Earl of Trent?
Ducky: The Earl of Trent. No, I can't say I have. Why?
Tony: I was just wondering. Thanks.