Sheldon: That's Commander Data. He's an android, but he aspires to be human. Which, if you ask me, is a step in the wrong direction.

Ms. MacElroy: Now, can anyone tell me why Melville shifts the narrative voice from Ishmael to Ahab? [Ms. MacElroy waits for somebody else to raise their hand] Sheldon.
Sheldon: I have a tummyache. I'd like to see the nurse.
Derek: A "tummyache"?
Sheldon: Yes, Derek, I have a tummy and it aches. Ergo, tummyache.
Derek: "Ergo"?
Sheldon: It's Latin, Derek.
Ms. MacElroy: Go to the nurse.
Sheldon: And to answer your question, the shifting point of view grants the reader a broader perspective of events than typically allowed by first-person narration.
Ms. MacElroy: Where were we?
Sheldon: And "ergo" is Latin for "hence," Derek.

Pastor Jeff: Come on up here, Sheldon. Let's hear what you got.
Sheldon: I've spent the last week studying what people believe, and I've come to a conclusion.
Pastor Jeff: And what's that?
Sheldon: I'm starting my own religion.
Pastor Jeff: I'm sorry, what?
Sheldon: I'm calling it Mathology. It's based on a universal binary system.
Pastor Jeff: That's terrific, Sheldon, but this is a Baptist Sunday school.
Sheldon: I know, I'm here to convert everybody. Any takers?
Pastor Jeff: Okay. Let's go have a talk with your mom.
Sheldon: The only sin in Mathology is being stupid.

Mary: Too bad. We are going.
Sheldon: Class is starting tomorrow. I'm not going anywhere.
Mary: Sheldon, do not argue with me. You are going home.
Sheldon: Mom, the people of Germany are obsessed with rules and devoid of humor. I am home.

George: I don't know how he's gonna coach the game on Friday night.
Mary: Poor man. Can you believe his marriage falling apart like that?
George: I know. If it was gonna happen to anybody, you'd think it'd be us.
Mary: Ain't that the truth. [George chuckles]

Georgie: I know it's a lot.
Mandy: It's amazing. [chuckles]
Georgie: It is?
Mandy: My kid's going to private school. You're going to private school!

Sheldon: Niblingo, I have a question.
George: Niblingo?
Missy: He made it up.
Sheldon: I coined it because there was no word to denote the unmarried mother of our niece or nephew.
Mandy: Sheldon, that sounds rude.
Sheldon: Do you have a better word for the unmarried mother of a niece or nephew?
Mary: [exhales] I'm not sure we need one.
Mandy: I think it's sweet. Kind of.