Dr. Pemberton: Hey, uh, if we haven't said it before, we just want to say thank you.
Dr. Campbell: Yeah. We couldn't have proven super-asymmetry without you.
Sheldon: Wait-wait. You all heard them say it. They didn't do anything.
Leonard: Sheldon. Shut up.
Sheldon: Yeah-- Well, that's rude.
Leonard: No. Shut up.
Sheldon: Oh, the code word, thank you.

Bernadette: But the real story was so sweet. The little astronaut was afraid, but he still went to space, and that's what made him brave.
Howard: [scoffs] But in space, the other astronauts made fun of him, and that's a thing he doesn't want to relive.
Bernadette: I get that. I guess it would just take a really brave man to put an embarrassing story like that out into the world, just so it might help some frightened children not feel so alone.
Howard: Wow. That is quite the guilt trip. Are you sure you're not Jewish?

Bernadette: I'm just a wife that is so proud of her husband, and doesn't think that he has anything to be embarrassed about.
Howard: Oh. You're sounding less and less Jewish.

Howard: So what do you think?
Bernadette: I think if you were in space without a shirt on, you'd die.
Howard: Oh. No, I am wearing a shirt. It's just skintight, so you can see my pecs.
Bernadette: When did you get pecs?
Howard: Yesterday, when I made Stuart add them.

Bernadette: Howie, what I liked about the other story was that it was real. I mean, nothing in this actually happened to you.
Howard: So, it's a children's book. I mean, cats don't wear hats. And if someone gives you green eggs, it ends with you on the toilet trying to make a deal with God.

Penny: Okay, look, Sheldon's a pain in the ass. But Dr. Fowler's really nice. So if you average them out - math - you got someone who's okay.
Leonard: But more than the person, the Nobel is about the work. You should understand that more than anyone.
Penny: Yes, because of your work on gravitational waves.
Kip Thorne: You know my work?
Penny: I do. But I'm-I'm really hogging this conversation. Leonard?

Leonard: Professor Thorne?
Kip Thorne: Dr. Hofstadter.
Leonard: Uh, you know my wife, Penny.
Kip Thorne: Sure. Hi.
Penny: Hi.
Leonard: Uh, we wanted to talk to you about Dr. Cooper. Now, before you say no-
Kip Thorne: No.
Leonard: Well, then, after you say no.
Kip Thorne: No.

Leonard: Just give them a chance. Uh, science has a history of difficult people. Look at, uh, Newton, who was a jerk to Leibniz, and Leibniz, who was a jerk to everyone.
Penny: Yeah, you know, and I don't need to tell you that gravitational waves are disturbances in the curvature of space-time. Or that the- Hey, you worked on the movie Interstellar?

Stuart: But this could be really good for me, you know? Finally get my artwork published. And-and come on, it's a, it's a cute story.
Howard: Oh, easy for you to say. No one's gonna think you're a coward.
Stuart: Are you kidding? The other day in the comic book store, a balloon popped and I threw up.

Howard: Well, look, what if we made a few changes?
Stuart: Uh, sure, yes. What-what do you have in mind?
Howard: Well, nothing major. But see here on the cover, where it says "frightened little," what if, I don't know, it didn't say that?
Stuart: So, it would just be The Astronaut?
Howard: Yeah, you're right. That doesn't quite pop. What about The Brave Astronaut? See, that's got some zip to it!
Stuart: Okay.
Howard: And here on this page, where I'm crying. What if, instead, I'm punching a meteor into the sun with my bare fists?
Stuart: So you have superpowers?
Howard: I like the way you're thinking.

Stuart: Uh, Bernadette said you weren't crazy about the book.
Howard: No. It's great. I just don't want anyone to ever see it or read it or know it exists.

Sheldon: Well, she didn't do anything wrong, but she's paying for my mistakes.
Leonard: Wow.
Sheldon: What?
Leonard: No. I'm just honestly impressed. When did you start caring about other people's feelings?
Sheldon: Well, I laughed when Amy got a shock from the broken Christmas tree lights, so it was after that.

Sheldon: See, sometimes I wish I could invent a time machine, so I could go back and prevent myself from acting so rashly.
Leonard: Or moving forward, you could think before you speak.
Sheldon: I suppose so.
Leonard: But the time machine thing is probably more likely.

Sheldon: My problem is that I don't always know when I've gone too far.
Leonard: Well, uh, if you like, I could try to help you out. You know, and maybe let you know if you're crossing a line.
Sheldon: Oh, you mean, like, with a code word?
Leonard: Sure. How's "shut up"?
Sheldon: That's perfect. People say it to me all the time, no one will suspect.

Sheldon: Well, it's true. The fact is, I feel really bad for Amy.
Leonard: Well, we all do. But just for fun, why do you?