Adult Sheldon: Renaissance humanism is finding meaning in the human form through art.
Billy Sparks: Can I move?
Sheldon: No.
Billy Sparks: But my butt itches.
Sheldon: Scratch it on your own time.

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]

Mary: Sheldon, faith means believing in something you can't know for sure is real. And right now, I am struggling with that.
Sheldon: So you don't believe in God anymore?
Mary: That isn't something for you to worry about. I need to figure this out myself.
Sheldon: Can I help? Maybe I could provide a fresh perspective.
Mary: I don't think so, baby.
Sheldon: Did you know that if gravity were slightly more powerful, the universe would collapse into a ball?
Mary: I did not.
Sheldon: Also, if gravity were slightly less powerful, the universe would fly apart and there would be no stars or planets.
Mary: Where you going with this, Sheldon?
Sheldon: It's just that gravity is precisely as strong as it needs to be. And if the ratio of the electromagnetic force to the strong force wasn't one percent, life wouldn't exist. What are the odds that would happen all by itself?
Mary: Why are you trying to convince me to believe in God? You don't believe in God.
Sheldon: I don't, but the precision of the universe at least makes it logical to conclude there's a creator.
Mary: Baby, I appreciate what you're trying to do, but logic is here. And my problem is here.
Sheldon: Well, there are 5 billion people on this planet and you're the perfect mom for me. What are the odds of that?

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.

Meemaw: Okay, I'm here. What's up?
George Sr.: Sheldon won't get out of bed, and I'm gonna be late for work. He's gonna be late for school.
Meemaw: So you want me to get him up and drive him?
George Sr.: Yeah.
Meemaw: I like it better when I just come eat your food and leave.

Meemaw: Shelly, Dr. Sturgis is on the line for you.
Sheldon: Maybe he is, maybe he isn't, but very well. [takes phone] Hello?
Dr. John Sturgis: [on the phone] Hi, Sheldon. I hear you're going through some sort of existential crisis.
Sheldon: I suppose so. I just don't know if we can tell what's real or not. And if nothing's real, I don't know what to think or if I'm even thinking at all.
Dr. John Sturgis: I went through something similar once.
Sheldon: Really? What happened?
Dr. John Sturgis: I was trekking through the Amazon, and I saw two frogs, one hallucinogenic and the other not. [chuckles] I tried to lick the normal one, and, by mistake, I licked the hallucinogenic one. It really rocked my world.
Sheldon: Why would you lick either of them?
Dr. John Sturgis: I'm not sure. Probably low blood sugar. But the point is, I also lost track of reality.
Sheldon: How did you handle it?
Dr. John Sturgis: I saw a jaguar, and I realized I didn't care if it was real or not. I just hauled my tushy out of there.
Sheldon: I appreciate the call. I'm giving you back to my meemaw now.
Dr. John Sturgis: Bye!
Meemaw: [quietly on the phone] Hey, John, any luck?
Dr. John Sturgis: Not unless you have access to a jaguar.
Meemaw: I don't think I do.
Dr. John Sturgis: Really, any jungle cat will do.

Adult Sheldon: While my meemaw wasn't able to acquire a jungle cat, the idea of tormenting a child did tickle her Texan fancy.
Meemaw: [singsong] Sheldon. [chicken clucking] I have someone else who wants to talk to you.
Sheldon: What are you doing with that filthy thing?
Meemaw: Why do you care? If nothing is real, then neither is the chicken. [Sheldon jumps out of bed] Oh. Good. We're standing now. That's progress.
Sheldon: Get her out of here.
Meemaw: Well, I would, but... [chuckles] apparently, I can't know what "here" is. So maybe I could just... set her on your bed.
Sheldon: Okay! Okay. I'll get dressed.
Meemaw: Make it snappy.
Sheldon: This still doesn't solve my existential crisis.
Meemaw: Say what? You want to hold her?
Sheldon: [gasps] No.
Meemaw: Less talk. More pants.