Sheldon: But you don't need another child prodigy. You've already got me.
President Hagemeyer: And you have been... [scoffs] so great. Just imagine what it'd be like having two of you.
Sheldon: Well, why would you want two of me? I mean, I've heard even one of me is a lot to handle.
President Hagemeyer: Well, you're not afraid of a little competition, are you?
Sheldon: From Paige? Hardly. But I should warn you, she can be very difficult.
President Hagemeyer: Well, luckily I've had some practice with that lately.
Sheldon: And how do you handle it?
President Hagemeyer: Usually I, uh, play to their egos. You know, make them feel like the smartest person in the room.
Sheldon: And they fall for that?
President Hagemeyer: Well... [chuckles] not everyone's as smart as you, Sheldon.

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.

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: Let's say grace.
Sheldon: Hang on, safety first. [puts mittens on]
George Jr.: When are you gonna get over that?
Sheldon: I would think recent events would make you value protection.
Mary: Enough.

Adult Sheldon: I've never been good at sharing. I had to share a womb...
Missy: [over ultrasound video] Ow.
Sheldon: [over ultrasound video] Ow.
["Rico Suave" by Gerardo playing over headphones]
Adult Sheldon: ...a bedroom...
Missy: ♪ Rico...♪
Adult Sheldon: Even my train room had Georgie's sweaty weight bench in it.
George Jr.: Come on, George. One more. Feel the burn, big boy. Feel the burn.
Adult Sheldon: But when it came to academics, the spotlight was all mine.
President Hagemeyer: Sheldon, having you here has been a real boon to this university.
Adult Sheldon: [spotlight shines on Sheldon] I did love basking in its glow.
President Hagemeyer: So we could really use your help in raising the school's profile even higher.
Sheldon: Of course. My intellect is at your service.
President Hagemeyer: Excellent. There is another young physics prodigy we want you to help us recruit. Her name is Paige Swanson. [electricity crackles]

Mary: Well, this time I'm actually gonna get a haircut. I had a little accident.
June: Uh-oh, what happened?
Mary: Well, I was sewing and got to daydreaming...
[flashback to Mary working on the sewing machine before she starts to fantasize:]
[fantasy: Missy, Georgie and George are wearing clothes Mary made:]
Missy: I love it. You can make all my clothes from now on.
George Jr.: I'm-a wear this to the prom.
George Sr.: I was wrong, honey, you really are good at this. Boy, am I dumb.
[reality:]
[sewing machine clacking]
Mary: George! George! Help!
George Sr.: What? What's the matter?
Mary: My hair got tangled in the machine.
George Sr.: So pull it out.
Mary: Don't you think I thought of that?!
George Sr.: Well, what do you want me to do? All right, don't move.
[back:]
Mary: And here we are.
June: Okay. Let's get that hat off and see what we're dealing with.
Mary: I don't want to.
June: Oh, come on. I've been doing this a long time. I promise you I've seen worse. Oh... [chortles] That's not bad at all.

Brenda Sparks: Hey, Mary.
Mary: Oh, Brenda. Love the haircut.
Brenda Sparks: Thank you. I was always afraid to go short, but I figured I already lost a husband. What's a few inches off the top?
Mary: Well, you look like a new person.
Brenda Sparks: I feel like a new person. I just needed to do something for me. It was either this or get a tattoo on my thigh.
Mary: I think you made the right choice.
Brenda Sparks: Well, I guess. I mean, who's seeing me naked these days?
Mary: Well, I wouldn't know.