Sheldon: Darn it. When he called me a baby, I should've said, "Then I guess you needed a baby's help to fix your paper."
Meemaw: Very clever.
Sheldon: Turn the car around.
Meemaw: We're halfway home. It's not that clever.

Sheldon: I started working on this presentation to address specific ethical dilemmas. The laws of robotics, whether torture can be justified, and cloning people for fun and spare parts. But I realized before resolving any of these moral quandaries, the real decision is who gets to decide. Do we put it up for a vote? Does everyone get to decide for themselves? Should it be by committee? Is that committee elected or appointed? You see where I'm going? You probably don't. For the smartest decision, we need the smartest person. Ladies and gentlemen, in the field of scientific ethics, we can't rely on democracy or plutocracy. We need an autocracy, or to be more precise, a "Sheldocracy." [slams fist] [military march plays]
Dr. John Sturgis: Um, I don't think this was the assignment.
Sheldon: Sorry, Dr. Sturgis, I pick the assignments now. Everybody, for next class, I want 500 words on what you can do to further the Sheldocracy. Punishment for typos will be severe.
Dr. John Sturgis: Class dismissed.
Sheldon: Hey, that's my line.
Dr. John Sturgis: No, it isn't.
Sheldon: Why don't you see me after class. Class dismissed.

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.

Sheldon: Okay, here's the plan. End your relationship with Coach Ballard, date Dr. Sturgis again, get him to love you more than ever, then when he least expects it, break his heart and say, "That's for Sheldon."
Meemaw: Great plan.
Sheldon: You think so?
Meemaw: For the sake of this car ride, sure.

Adult Sheldon: Of all my many skills, one of the lesser known is my impressive ability to wait for things. I once stood perfectly still for 38 minutes because a bee was on my shoulder.
Sheldon: [blows, groans]
Adult Sheldon: I once waited four and a half hours to be released from a locker.
Sheldon: Hello? Anyone there? That's okay. I'll wait.
Adult Sheldon: And one time, when Dr. Sturgis was late for a lecture, I stayed longer than everyone.
Sheldon: Where are you all going?
Student: Professor's not here.
Sheldon: I can teach the class. I just need a box to stand on.

Georgie: I bet the guy who invented the spork is a millionaire.
Jana: I guess.
Georgie: I wonder if his last name is Spork.
Jana: It comes from "spoon" and "fork." Spork.
Georgie: Oh, my God. Mind is blown.