Adult Sheldon: From a young age, I was the proud member of several elite organizations: The Radio Shack Battery Club, entitling the bearer to the incredible bargain of one free battery per month. It's no wonder they went out of business.
Starfleet International, entitling the bearer to say things like, "I'm a member of Starfleet International."
And best of all, the Natural Science Museum of Texas, which included a free subscription to their magazine.
Sheldon: "The secrets of carbon isotope dating." Juicy.

Mary: Let's say grace.
Sheldon: Hang on, safety first. [puts mittens on]
George Jr.: When are you gonna get over that?
Sheldon: I would think recent events would make you value protection.
Mary: Enough.

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.

Missy: What's it like to not believe in God?
Sheldon: It's great. Big fan.
Missy: Are you ever afraid you're wrong?
Sheldon: About religion? Never. About other things? Also never.

Mary: Mom, can you make the salad?
Meemaw: Sure.
George Sr.: Hey, don't put in any of those little tomatoes.
Meemaw: Hey, I don't tell you how to impersonate a lump of clay. You don't tell me how to make a salad.

Sheldon: Dad, do you believe that fossils are millions of years old?
George Sr.: I guess. Why?
Sheldon: Well, Mom believes the world was only created 6,000 years ago.
George Sr.: Yeah. So?
Sheldon: Are these differences a sticking point in your marriage?
George Sr.: Not at all.
Sheldon: Why?
George Sr.: Simple. We never talk about it.
Sheldon: So you just avoid discussing topics you don't agree on?
George Sr.: At all costs.

Dr. John Sturgis: Connie, I need to apologize.
Meemaw: Oh, that's okay. Don't worry about it.
Dr. John Sturgis: No, I am worrying about it. I didn't realize that with you and I being in a relationship, me wearing your dead husband's clothes would be emotionally challenging for you.
Meemaw: All right, apology accepted.