Billy Sparks: Hey, Sheldon.
Sheldon: Hello, Billy.
Billy Sparks: What you doing?
Sheldon: Building a nuclear reactor.
Billy Sparks: Cool. I'm having Lucky Charms for dinner? What are you gonna do with it when you're done?
Sheldon: Stand in front of the refrigerator as long as I want.

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.

Dr. John Sturgis: Connie, I believe I have answers to all your questions.
Meemaw: Lay it on me.
Dr. John Sturgis: Time: the event begins at 6:00 p.m. The dress code is: business attire. Dinner will be served, but it's been suggested that we eat first, because the food is dreadful.
Meemaw: Good to know.
Dr. John Sturgis: And last but not least, a camelid is any member of the camelidae family, such as llamas, alpacas or vicuñas. You didn't ask that one, but, uh, it seemed like something you should know.

Sheldon: Why are you eating cereal for dinner?
Billy Sparks: I was hungry, and my parents are in their bedroom kissing.

George Sr.: Do you have any idea what our electric bill is?
Sheldon: Yes. I do our taxes. And it's higher than it should be.
George Sr.: And why do you think that is?
Sheldon: Well, I don't want to point any fingers, but Missy sleeps with a night-light.