Mary: I'm just saying, it can be tough sleeping in a new place without your mom.
Sheldon: Dr. Sturgis will be there. He's like a mom. But he's really smart.

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: I think you tripped and hit your head.
Dr. John Sturgis: I'm a bit woozy.
Sheldon: I better test for concussion. What's your name?
Dr. John Sturgis: John Burgess Sturgis.
Sheldon: Burgess Sturgis? Great name.
Dr. John Sturgis: Thank you.

Mary: Remember, it's a school night, so his bedtime is 7:30.
Dr. John Sturgis: Mine, too!

Sheldon: Do you believe there's intelligent life in the universe?
Dr. John Sturgis: I have no doubt.
Sheldon: Why is that?
Dr. John Sturgis: The Drake Equation claims that there are at least 20 detectable civilizations in our Milky Way galaxy alone.
Sheldon: Interesting. My sister likes to say that I'm an alien.
Dr. John Sturgis: I've often been called that. Once by the praying mantis in my dream.
Sheldon: Maybe we are aliens.
Dr. John Sturgis: Perhaps. Or maybe people like you and me were the original inhabitants of Earth, and everyone else is from outer space.
Sheldon: Ooh, I like that better.