Mandy: You're awful quiet tonight.
Georgie: Oh, just work stuff.
Jim: Huh, I wouldn't have thought running a laundromat would be all that stressful.
[As Georgie and Mandy share a look, a flashback shows the gambling machines]
Mandy: Well, Dad, you run your own business. You know what it's like dealing with the public.
Jim: That I do. Actually, I had a guy the other day came in returning a set of tires I sold him a year ago, way past warranty. Put up quite a stink, too.
Georgie: How'd you handle it?
Jim: Gave him a new set of tires. I mean, I lost a couple bucks, but got a customer for life.
Georgie: Smart. I could learn a lot from you.
Jim: Well, you can learn a lot from your father, too.
Georgie: Hmm. All right, what you got, big man?
George: Uh, well... [telephone rings]
Mandy: Saved by the bell.

Mary: Hi, Jim.
Jim: Hey, Mary. Good to see you. You looking for some tires?
Mary: Actually, I'm looking for your wife.
Jim: Oh. You're not gonna yell at her again, are you?
Mary: No, no.
Jim: Okay, you sure about that? 'Cause I wouldn't mind seeing it.

Georgie: Yeah, life would be so much easier if they just realized how alike they are.
Jim: Don't say that. Don't ever say that.
Georgie: We're alone in a closet. You said I could speak my mind.
Jim: Yeah, yeah, but not that.
Georgie: So where?
Jim: Nowhere. They, uh... they'll know.

Audrey: Mary. We're so sorry.
Mary: Thank you.
Jim: Well, I didn't know him long, but, uh, I loved that guy.
Georgie: [nods] He felt like y'all were long-lost friends.
Jim: [voice breaking] Oh, here we go.
Mandy: Come on, let's get you some Kleenex.

Professor Salzman: One should not even attempt to unify type-one und type-two...
Adult Sheldon: I wanted to give up and run away, but I had read enough comic books to know that heroes don't quit. Instead of running, I decided to stay and face the biggest challenge I've ever had: keeping my mouth shut.
Professor Salzman: Any thoughts on the compactification of the extra dimensions here?
[Sheldon goes to raise his hand along with Mei-Tung, but stops himself]
Adult Sheldon: Mmm.
Professor Salzman: Ja.
Mei-Tung: One must conserve the unbroken supercharges.
Professor Salzman: Und the spherical Hankel transform of this equation is... [Sheldon snaps his pencil]
Adult Sheldon: This turned out to be a pivotal moment in my life. By being open to people smarter than me, I grew as both a man and a scientist. Humble, brilliant... I really am the whole package.

Sheldon: Professor Salzman, I just wanted to let you know that I studied up and am now well-versed in the Calabi-Yau manifold.
Professor Salzman: Okay.
Sheldon: It was never part of the curriculum at East Texas Tech.
Professor Salzman: East Texas Tech? Sounds charming.
Sheldon: It's actually quite humid. Regardless, I'm ready to reassert myself as class leader.
Professor Salzman: Your classmates are from some of the most elite universities in the world. There is no East MIT.
Sheldon: Well, I would have gone to a better school, but I was 11, which you have to admit is pretty impressive.
Professor Salzman: Sheldon, at some point we ask of the piano-playing dog not, "Are you a dog?" but, "Are you any good at playing the piano?"
Sheldon: Excuse me?

Adult Sheldon: Heidelberg is considered one of the most beautiful cities in Germany. Heidelberg Palace, the Karl Theodor Bridge, the Schloss Schwetzingen. But I couldn't care less. The only sights I wanted to see were the looks of awe on the faces of my fellow students as I demonstrated my intellectual superiority.
Sheldon: Cylinders that are smaller than ten to the minus-35 meters. [all laugh] What's happening?
Professor Salzman: You don't laugh at people saying stupid things in Texas?
Sheldon: You're darn tootin' we do. So who goofed? [laughter]
Professor Salzman: You did, dummkopf.
Sheldon: Dummkopf? You're calling me a dummy?
Professor Salzman: Class, who knows where the dummkopf went wrong? [hands go up] Mr. Ziegler.
Mr. Ziegler: He forgot to consider the Calabi-Yau manifold.
Professor Salzman: Thank you, Mr. Ziegler.
Sheldon: Wait, what's the Calabi-Yau manifold? [laughter]
Professor Salzman: Dummkopf.
Adult Sheldon: I was quickly learning not all Germans were the warm, fun-loving people I was led to believe.