Paige: Okay. Now close your eyes and pucker up. This might tickle.
[As Paige puts two fingers on Sheldon's lips, she pulls out a magic marker and draws a mustache on his face]
Sheldon: [muffled] What's happening? Are we kissing?
Paige: You bet. How was that?
Sheldon: I didn't feel anything romantic.
Paige: Hmm. Me, either.
Sheldon: I guess it wasn't a crush after all.
Paige: I guess not.
Sheldon: Hmm. That's a relief.
Paige: It is.
Adult Sheldon: I went to three classes before I figured it out. Good thing I look spiffy in a mustache.

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.

President Hagemeyer: I must tell you that Sheldon was very excited to hear that you might be joining us.
Linda: Well, isn't he sweet?
Paige: He's a peach.
Sheldon: All right, I'm here. [to Hagemeyer] Hello. [to Linda] Hello. [coldly to Paige] Hello.
Paige: Hi, Sheldon. I'm so excited for you to show me around campus today.
Sheldon: The only reason I'm doing it is because...
President Hagemeyer: He's excited to do it, I'm excited he's doing it. Are you excited?
Linda: Sure.
President Hagemeyer: Everyone's excited. Yay.
Sheldon: [sighs] Come on, let's go.
Paige: You and me, together again. It just feels right, doesn't it? [Sheldon grumbles]

Adult Sheldon: I wasn't getting the help I needed, so I turned to the smartest resource I knew.
Dr. John Sturgis: [on the phone] Love is a funny thing. They say, "The heart wants what the heart wants," but I think it should be, "The limbic system wants what the limbic system wants."
Sheldon: Finally, someone's making sense.
Dr. John Sturgis: Well, not to brag, but when it comes to unrequited love, I'm kind of an expert.
Sheldon: Well, when I talk to Paige, all she does is drive me crazy.
Dr. John Sturgis: There's a thin line between affection and aggravation. The Roman poet Catullus said, "I hate and I love and I know not why."
Sheldon: I'm not sure what to make of that.
Dr. John Sturgis: Perhaps it'd be more useful in Latin. "Odi et amo..."

Mary: Okay, have a great day. Love you.
Missy: [covers mouth] Love you, too.
Mary: What are you doing?
Missy: I learned it in baseball. When you don't want the other team to see what you're saying.
Mary: It's okay to love your mom.
Missy: At home. Here, you get the hand.