George: What do you think you're doing?
Sheldon: Exploring the impact of the French invasion on Imperial Russian society.
George: Well, get out of here. You're going back to class.
Sheldon: No, I'm not.
George: Excuse me?
Sheldon: I don't learn anything in class. But in here I've taught myself the applications of gravitational lensing, Faraday's law of magnetic induction, and how to whistle. [blows air] Well, sound came out yesterday.
George: You can't spend your day in a broom closet.
Sheldon: It's no longer a broom closet. It's now a citadel of higher learning.

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: So he hasn't been in any of your classes?
Ms. Ingram: Mm-mm, not a one.
Ms. MacElroy: Nope.
George: But I bring him here, I take him home he's got to be somewhere in the building.
Ms. Ingram: Mm, I might've seen him in the library. But at this point, I sometimes think I see him when I'm alone in my house.
Ms. MacElroy: Like that creepy Chucky doll in the movies?
Ms. Ingram: [laughs] Exactly!

George: Hey, Hubert. Was Sheldon in class today?
Mr. Givens: Nope. Haven't seen him all week.
George: Weren't you gonna say anything?
Mr. Givens: I didn't want to jinx it.

[Sheldon is chuckling as he stares at a blank screen]
Missy: What are you doing?
Sheldon: Watching last week's Professor Proton in my mind.