Sheldon: [on the phone] Hello. I understand you're looking for a docent. I'm 11 years old, but you should know I have a high school diploma and I know more about trains than anybody. You still sound on the fence.
Adult Sheldon: It was time to break out my unique ability.
Sheldon: Let me tell you about every model train I own and what each of them means to me. The first locomotive I ever received...
Adult Sheldon: Wouldn't you know it, 47 short minutes later, I got the job.

Sheldon: Missy and I broke a lot of rules the other night, and we've received no punishment.
George: [sighs] Buddy, it's been a rough week. We're just glad you're both safe.
Sheldon: But in the absence of a divine being, society's rules are what keeps a person's morality in check.
George: Well, there you go.
Sheldon: No, y-you're not following me. If actions have no repercussions, society breaks down, everything devolves into chaos.
George: You might be overthinking this.
Sheldon: I thought so, too. Then I thought about it, and I'm not.
George: Sheldon, you had one bad night. Just let it go.
Sheldon: But... I did something wrong and I got away with it. That's not okay.
George: Buddy...
Sheldon: Socrates maintained that the man who lies to himself has an enemy living within. He's not even a person. He's just a chaos of selfish desires wrapped in an animal hide.

Sheldon: Unbelievable. It's either cartoons or men in their underwear banging their heads together.
Ricky: You complain a lot.
Sheldon: Excuse me?
Ricky: Seriously, dude, you need to relax.
Sheldon: How can I relax? I'm being held captive in a bacterial playground.

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.

Adult Sheldon: Presenting... "Sheldon Cooper's Top Five Sources of News From My Childhood". Number five: Star Trek Fan Club Magazine.
Sheldon: Mom, DeForest Kelley's favorite episode is "The Empath."
Mary: Good to know.
Adult Sheldon: Number four: the Weather Cube from RadioShack.
Man: [from device] The humidity is 90% with a dew point of 79.5 degrees.
Sheldon: Mom! The dew point is 79.5 degrees.
Mary: [o.s.] Okay.
Adult Sheldon: Number three: The MacNeil/Lehrer NewsHour. Such a great theme song.
Sheldon: [hums] Buh-buh-bum.
Adult Sheldon: Number two: Meemaw after a few beers.
Meemaw: It took a while, but we finally picked a new name for my bowling team: The Ball Busters.
Sheldon: Hey, Mom. Guess what Meemaw named her bowling team? The Ball...
Adult Sheldon: And the number one source of news from my childhood: the bulletin board at the train store. News about trains in a store full of trains. Yummy.
Sheldon: How did this not make The MacNeil/Lehrer NewsHour?

Mary: [eating pop corn] Get him, Dalton. Get him.
Georgie: Mary Cooper, what are you doing?
Mary: Nothing.
Georgie: Why are you watching Road House?
Mary: Why aren't you at work?
Georgie: I asked you first, and my question is way more interesting.
Mary: It was just on. I don't even know what that is.
Georgie: Then how'd you know his name's Dalton?
Mary: I don't have to explain myself to you.
Georgie: This is a pretty dirty movie.
Mary: How do you know? It is rated R.
Georgie: For violence, language and sexual content. You should be ashamed of yourself.

Georgie: So how many times have you seen Road House?
Mary: Sorry, can't hear you.
Georgie: More or less than five? 'Cause that'show many times I've seen it.
Mary: That's how many years you're gonna be grounded if you don't drop it right now.
Georgie: Does Dad know you like this movie?
Mary: [vacuum stops] No, and it is gonna stay that way.
Georgie: Why?
Mary: Because it is not something I should be watching.
Georgie: Then why are you watching it?
Mary: It is a guilty pleasure, so will you drop it now?
Georgie: Relax. I ain't gonna tell nobody.
Mary: Thank you.
Georgie: I think it's awesome you like it.
Mary: It is pretty cool how Dalton doesn't drive his Mercedes to the bar 'cause he knows they're gonna trash it.
Georgie: Dalton's no dummy.
Mary: No, sir.