Sheldon: Well, that's what I heard. And if Hawking doesn't let it stop him, then I can't let this cast stop me.
Missy: Great. Go back to sleep.
Sheldon: I will, and I'll do it all by myself. [sings] Soft kitty, warm kitty
Missy: Oh, my God.
Sheldon: Little ball of fur Happy kitty, sleepy kitty, purr Purr, purr.

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.

Georgie: "Have a great summer. Georgie". Normally I'd write, "Have a bitchin' summer", but I figured you wouldn't like that.
Sheldon: I wouldn't.

Georgie: What do you want?
Sheldon: I was hoping you could help me build up my leg muscles to increase my speed.
Georgie: If you don't want people chasing you, be less annoying.

Meemaw: Look, you haven't even gotten to the worst part of it yet. They're gonna leave home. They're gonna move to another city.
Mary: Oh, Lord.
Meemaw: They're gonna tell you their loser boyfriend has knocked them up. Just to be clear, that would be you.
Mary: Sorry.
Meemaw: Turned my hair gray overnight.
Mary: I said sorry. Clearly, you're not in the mood to help.
Meemaw: Listen, it's hard being a parent, but if you do it right, they don't need you anymore.
Mary: Well, I don't like that. I get it, but I just don't like it.
Meemaw: Well, I'd point out, you'll always have your husband, but you want me to be "helpful".