Sheldon: I suppose you're wondering why I put you through all this.
Leonard: You mean the last two minutes or the last 20 years?

Sheldon: You know we're almost finished with our paper; we just need help tracking down the citations.
Leonard: That's busywork. Can't you just get a grad student to do it?
Amy: No, this paper is incredibly important to us, and we need someone we can trust.
Please, it would mean a lot.
Leonard: You know what? Sure. The three of us in the library looking up old papers, that actually could be kind of fun.
Sheldon: Oh, no, we won't be there.
Leonard: It just got more fun.

Bernadette: Hey, Denise. Is Stuart here?
Denise: Oh, no. Doctor's appointment.
Bernadette: Oh, is he okay?
Denise: Not since I've known him.

Sheldon: Oh, hey, Leonard. Is the podcast too loud
Leonard: I didn't hear a podcast.
Amy: I told you no one could hear it.
Sheldon: Well, I heard Ira Glass, so he's either in your earbuds or clinging to the ceiling like a gecko.

Denise: Okay, so walk up to that chest and push X. X. Push X.
Bernadette: Which one's X?
Denise: The one with the X on it.
Bernadette: Take it easy, I'm new at this.
Denise: What, the alphabet?

Penny: So neither of them showed up for work today?
Leonard: No, I tried calling and no one picked up.
Penny: Look, I'm sure they're fine. They were probably up all night coming up with a new theory.
Leonard: I also texted to see if he wanted to go to the new Fantastic Beasts movie and he didn't respond.
Penny: All right, well, they're already dead. There's nothing we can do.

Sheldon: Leonard, I need to tell you something. I'm having an affair.
Leonard: Okay.
Sheldon: You have to swear not to tell anybody.
Leonard: Okay.
Sheldon: You are the only one who knows. Uh, well, you and Rita, the cafeteria lady who has been giving me more than Tater Tots.

Leonard: Why did you pull this Russian paper?
Raj: Oh, it was cited in this paper over here, so I thought we should check it out.
Leonard: Mm, it's not translated. Maybe we should talk to Howard; his Russian's pretty good.
Raj: We don't need Howard. I've got Google Translate. Okay, here we go, from Russian to English. "Examinations of moose chowder in lemon parachutes." Yeah, okay, now I know why this app is free.

Amy: Sheldon, do you want to put the tables after each section or in an appendix at the end?
Sheldon: You know what? We wrote this paper together. I think we should decide together that they go in an appendix at the end.
Amy: How about that? There is an "I" in "team.

Amy: Look at what we made.
Sheldon: I know. It really is the best of both of us. It's got my math and your sassy takedown of the fundamental nature of symmetry. It's got my bottomless intellectual curiosity and your petulant refusal to spell "grey" with an "a" like an American.

Sheldon: The point is, we can't afford to have this paper leaked before we're ready to publish. That's how you kiss the Nobel Prize good-bye instead of hello as I intend to do.
Amy: I assume you mean metaphorically.
Sheldon: Absolutely not. If the King of Sweden hands me a medal, I intend to smear it with Purell and then kiss it.

Penny: What did he want?
Leonard: Oh, nothing. He just concocted some stupid test to see if I can keep a secret.
Penny: Ooh, what's the secret?
Leonard: I'm not gonna tell you that. The test is stupid, but I still want to pass.

Leonard: Well, I am shocked, Sheldon, because I totally believed that the woman you reported for being stingy with the peas couldn't keep her hands off you.

Amy: Well, I am a little hurt that you weren't gonna tell me my husband was having an affair. I thought we were friends.
Leonard: I didn't really believe him.
Amy: Why not? You don't think other women find him attractive?
Leonard: (laughing) No.

Bernadette: What you playing?
Howard: Fortnite. A bunch of people parachute onto an island and fight it out to be the last man standing.
Bernadette: Like Hunger Games?
Raj: More like Bachelor in Paradise, but not as cutthroat.