Sheldon: I may not look it, but I'm the future of physics, so just move on.

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.

Billy Sparks: Who's Melissa?
Missy: Me.
Billy Sparks: Then who's Missy?
Missy: "Missy" is short for "Melissa." Like how "Billy" is short for "William."
Billy Sparks: I don't understand.
Missy: You know how your real name is William?
Billy Sparks: I'm Billy.
Sheldon: No, we call you Billy, but your real name is William.
Billy Sparks: But my underpants say "Billy" in them. Mom, is my name William?
Brenda Sparks: [sighs] Yeah.
Billy Sparks: Then whose underpants am I wearing?

Sheldon: I'm excited to finally use college-ruled paper and not feel like I'm living a lie.
Billy Sparks: What's college-ruled paper?
Sheldon: The lines are 18% closer together.
Billy Sparks: College sounds hard.
Brenda Sparks: You won't have to worry about that, honey.
Billy Sparks: Okay.

Dr. John Sturgis: [on answer machine] Hello, Coopers. Dr. Sturgis here. This is a message for Mary. I have some news I need to share with you before Sheldon starts college. Please call me back. [answering machine beeps]
Sheldon: I wonder why he'd want to talk to you and not me.
Dr. John Sturgis: [answering machine beeps] Dr. Sturgis again. If Sheldon happened to hear that last message and is wondering why I'd want to speak to his mother first and not him... Excellent question! It's that kind of curiosity that makes him a true man of science. [answering machine clicks, beeps]
Sheldon: I'm a true man of science.