Sheldon: Now you don't want me to go to college either?
George Sr.: I didn't say that. I'm just saying, given how young you are, we need to be realistic.
Sheldon: I'll have you know I recently took care of my own boo-boo.
George Sr.: And as grown-up as that makes you sound, I don't think it's gonna convince your mother.
Sheldon: What will convince her?
George Sr.: I don't know, but I'm sure between the two of us, we can come up with a plan.
Sheldon: Well, you managed to get her to marry you, so you do have a track record.

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]

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.

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.

Mary: Shelly and this college stuff is killing me. I... I never went to college. How can I prepare him?
Brenda Sparks: Mary, if that kid is smart enough to have colleges wanting him already, he's got to be smart enough to figure it out.
Mary: Maybe. It still hurts to hear him say he wants to leave.
Brenda Sparks: I bet. On the other hand, I'm worried my Billy will never be ready to leave.
Mary: Oh, of course he will.
Brenda Sparks: Damn. Smoking, drinking, lying. You're covering all the sins today.

Mary: So, George is mad at me, and Sheldon is mad at me, and... honestly, I'm mad at me, too.
Brenda Sparks: Will you please give yourself a break? All that you do for that family, I am surprised you didn't crack years ago.
Mary: How do you handle it all?
Brenda Sparks: I'm sitting in a chicken coop drinking a wine cooler at 11:00 a.m.... clearly, I don't.

[on the "Why Sheldon Cooper Should Go to College" tape:]
Ms. Ingram: Honestly... teaching Sheldon is the hardest thing I've ever had to do. And I don't say that because he can be a pain. I say that because he's so intelligent, I had to study every night just to keep up. I'm gonna miss him.