Mary: Aw, baby. I'm so sorry you're havin' to deal with this.
Sheldon: It's okay. German philosopher Friedrich Nietzsche said, "That which does not kill us makes us stronger."
Mary: And do you feel stronger?
Sheldon: [contemplating] No.

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.

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: You understand that some people are going to be intimidated by you, because of how smart you are?
Sheldon: Or maybe they'll recognize my intellect and make me their leader.

George: The little Sparks girl?
Mary: You're kidding. She seems so sweet.
Georgie: He says she slaps him around, takes his lunch money. She even put a tadpole down his shirt.
Meemaw: Poor kid. He tucks in those shirts.

Adult Sheldon: Existing in a world of predators isn't easy, but we prey have developed several natural defenses to help us survive. There's playing dead, warning calls, camouflage, and, last but certainly not least, good old-fashioned running away. A little screaming never hurts either.

Mary: She looks harmless.
Meemaw: She's cute. So she probably gets away with stuff. I'm like that.