Sheldon: Is this because Coach Ballard got upset and broke up with you?
Meemaw: No.
Dr. Linkletter: You two broke up? I'm sorry to hear that.
Dr. John Sturgis: Terrible news.
Dr. Linkletter: Terrible. Terrible.
Meemaw: It's okay. I'm over it.
Dr. Linkletter: Excellent.
Dr. John Sturgis: Great.
Sheldon: Look at the four of us talking about Isaac Asimov!

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.

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.

Principal Petersen: Our next young speaker needs no introduction, but that didn't stop him from writing one and making me read it. [laughter] "Fun fact." [audience groans, murmurs] I hear you. "The word 'valedictorian' is from the Latin 'valedicere,' meaning 'to say farewell.' It is primarily used in the United States, Canada, the Philippines and Armenia." Maybe that fact's more fun in Armenia. Please welcome your valedictorian, Sheldon Cooper.
Mary: Yay, Shelly!
Sheldon: Hello. I'm not very comfortable speaking in front of crowds. But there's a technique to reduce stage fright by focusing on one person in the audience and delivering your speech just to them. That's what I'll be doing today. If it weren't for this person, I wouldn't be here right now. They've taught me a lot, and it's by their example that I found the courage to move forward into this new and exciting chapter of my life. Missy... ...this is for you. Change can be scary, but I know we're going to be fine... ...because like you said, "It's okay to be scared. We just have to do it anyway." So if any of my fellow graduates are nervous about the future, know that you're not alone. I suggest you all try to be as brave as my twin sister. That's my plan. Missy, I wish I could give you advice about middle school, but I was so smart, I skipped it. If you make it to high school, we'll talk. Thank you. [applause]

Dr. Linkletter: I can't believe you'd use our book club to hit on Connie.
Dr. John Sturgis: And you didn't, Captain Cookies?
Dr. Linkletter: All right, if we're both gonna pursue her, let's lay down some ground rules.
Dr. John Sturgis: Fair enough.
Dr. Linkletter: And my ginger snaps are moist and delicious!
Dr. John Sturgis: Yeah, keep telling yourself that.

Sheldon: Oh, I'm assuming you heard the bad news.
Mary: What news?
Sheldon: Isaac Asimov died.
Mary: Oh, no, is that one of your school friends?
Sheldon: What? No, he's one of the most prolific science fiction writers in the history of the genre.
George: Never heard of him.
Sheldon: Sure you have. He wrote I, Robot, the Foundation trilogy.
George: Nope.
Sheldon: Nightfall? The Posotronic Man?
George: You ever heard of this guy?
Mary: Mm-mm.
Sheldon: Caves of Steel. Hostess. The Naked Sun?
George: Whoever he is, sorry he died. Gotta go. Bye.
Mary: Bye.
Adult Sheldon: Astonishing. Asimov wrote almost 500 books, which was apparently 500 more than my family had read.

Dr. Linkletter: [on answer phone] Connie, Grant Linkletter. Wonderful seeing you tonight.
Meemaw: Yeah, yeah.
Dr. Linkletter: Hope you enjoyed our little book club. If you'd ever like to discuss it further, I know the perfect Italian café. The cannolis are resplendent.
Meemaw: Resplendent! [chuckles] [machine beeps]
Dr. John Sturgis: [on answer phone] Connie! John Sturgis here.
Meemaw: What a surprise.
Dr. John Sturgis: It was so nice to have you at our book club. When it comes to science fiction, those things can be real sausage parties. Anyhoo, if you're free next week, I was wondering if you'd like to... [Meemaw skips to the next message]
Dr. Linkletter: Grant Linkletter again. If you don't like Italian, I also know a sublime Vietnamese spot. Have you ever tried Bún Boò Hue? [machine beeps]
Dr. John Sturgis: I don't know why I said "sausage party." There was probably a better way to phrase that. [machine beeps]
Dr. Linkletter: Connie, Grant Linkletter...