Sheldon: You know, in a way, you and I are having a very similar day.
Mandy: Really? How might that be?
Sheldon: I'm also bringing something new into the world. Although mine does not involve my privates being inspected my strangers.

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.

Sheldon: You've been through this before. How long does it take?
Brenda Sparks: Depends. With Billy, it was days.
Sheldon: Well, he always has been a tad slow.

Billy Sparks: Do you think my mom and your dad are going to be boyfriend and girlfriend?
Missy: No.
Billy Sparks: If they got married, would that make us brother and sister?
Missy: It's not gonna happen.
Billy Sparks: Luke Skywalker and Princess Leia were brother and sister, and they still kissed. [Missy scoffs] I didn't write it. [Missy scoffs again]

Sheldon: All right, let's do this.
Mandy: Why are you wearing dish gloves?
Sheldon: To deliver the baby.
Mandy: That is not happening.
Sheldon: Good. Whew. Can I get a glass of water?
Mandy: Sheldon, I need to go to the hospital.
Sheldon: Well, I can't drive. I do have a bike, but you'll never fit in the wagon.