George: And Sheldon's fine. You know what he's like. If someone took him, I'm sure they'll bring him right back.

Sheldon: How do we love our neighbors when our moms hate each other?
Billy Sparks: Who does your mom hate?
Sheldon: Your mom.
Billy Sparks: Hey, my mom hates your mom. Small world.

Paige: Sheldon?
Sheldon: Paige?
Paige: I'm so happy to see you. Are you happy to see me?
Sheldon: Not immediately.
Paige: That's okay. I'm happy enough for both of us.

Georgie: How come when I'm sick it's no big deal, but when Sheldon gets sick you act like it's the end of the world?
Mary: Because he's a fragile little boy and you're gettin' to be a big, strong man.
Georgie: That's true. Puberty has done right by me.

Dr. John Sturgis: Hello, my little vicuña.
Meemaw: [chuckles] Well, hello to you, too. And more importantly, what is a vicuña?
Dr. John Sturgis: Only what I feel is the cutest camelid on the planet.
Meemaw: Well, I suppose I could ask you what a camelid is, but you're just gonna say more words that I don't know.

Missy: Do you believe in God?
Georgie: Yeah.
Missy: But in the Bible, he does all kinds of mean stuff. If he's good, why would he do that?
Georgie: Maybe he just wants to show he's in charge. Hulk Hogan's nice, but in the ring, he will mess you up.
Missy: That's either really smart or really stupid.
Georgie: That's what I do.
Missy: Do you ever wonder if it's all made-up?
Georgie: Look, this is Texas. We like football. We like God. And beef. Beef's up there, too.
Missy: But how do you know there's a God?
Georgie: See that girl dancing in them shorts? There's a God.

Sheldon: Okay, your basic arithmetic skills are disappointing but functional.
Billy Sparks: Thank you.
Sheldon: All right, let's talk about negative numbers.
Billy Sparks: I'm all ear.
Sheldon: "Ears."
Billy Sparks: No. "Ear." This one's clogged.

Sheldon: Okay. Negative numbers are numbers that are less than zero.
Billy Sparks: But zero's nothing.
Sheldon: Yes.
Billy Sparks: So how can you have less than nothing?
Sheldon: Let's see. How about this? If you have a dollar, that's one. If you have no dollars, that's zero. But if you owe me a dollar, that's negative one. Does that make sense?
Billy Sparks: I think so.
Sheldon: All right, we're making progress.
Billy Sparks: Mom! I owe Sheldon a dollar.

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.

Pastor Jeff: Before our final prayer, would anyone else like to say a few words?
Mary: Missy? [Missy shakes her head] Shelly?
[Sheldon stands up and walks up to the microphone]
Sheldon: I've been thinking a lot about the last moments I had with my dad. It was morning, and he was leaving for work. He said, "See y'all later." And I said nothing. I regret that. I could have said "bye" or asked him for a ride. Or told him that I loved him. But I didn't. I barely noticed he left. So many times that I didn't notice my father. I hope he knew how much I loved him.
Adult Sheldon: I wish I could tell you I said all those things. But I didn't.
Mary: Shelly? [Sheldon shakes his head] [Mary shakes her head to Pastor Jeff]
Pastor Jeff: Let's bow our heads in prayer.
All: Our Father, who is in heaven, hallowed be Your name...
Adult Sheldon: For a long time, I focused on my father's shortcomings. Now that I'm his age and have kids of my own, I realize he was just a person doing the best he could, and he did a lot. I didn't say it at his funeral, but I can say it now. I loved my father. I will miss him forever.

[Adult Sheldon walks through his childhood home:]
Adult Sheldon: Eventually, my mom sold the house. My dad's chair was gone. My spot was gone. [sits down on couch] Where we ate together. But I can still remember it exactly the way it was the day I left for Caltech.
Missy: Hey.
[Young Sheldon turns around to face Missy]
Missy: What are you doing?
Sheldon: Taking it all in one last time, so I remember it when I'm older.
Missy: You gonna remember me?
Sheldon: I have an eidetic memory. I have no choice.
Missy: Ha.

Adult Sheldon: A primary feature of quarks is that they're always bonded together, but in that moment, I felt like a neutrino, destined to be alone forever.
[Montage of young Leonard, Penny, Raj, Howard, Bernadette and Amy at that moment]
Adult Sheldon: Thankfully, I was wrong.

Sheldon: We're going to jail.
Missy: Georgie's going to jail. I'm saying I was kidnapped.
Sheldon: That's a good plan. You and I were kidnapped.
Georgie: If I'm going to jail, we're all going to jail.

Mary: You smoke marijuana?
Sheldon: Mom!
Libby: No, ma'am.
Tam: Just say no. [Mary shoots him an unimpressed look]

Paige: You actually believe in the multiverse theory?
Sheldon: Very much so. It's the most elegant interpretation of quantum mechanics.
Paige: So you really think there are an infinite number of universes?
Sheldon: Stephen Hawking believes it, so, yes, I do.
Paige: Well, if there are an infinite number of universes, I think that theory's dumb in all of them. [CHUCKLES] This is fun.