Sheldon: I'm being forced to swim tomorrow in P.E.
Missy: Poor baby. You have to play in a pool instead of sit in a classroom.
Sheldon: A pool of sweat, germs and dead skin cells.
Missy: Still better than learning.
Sheldon: Maybe it's time for me to run away from home and join a traveling math club.

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.

Adult Sheldon: In many ways, a high school is like an academic house of horrors. There's the cafeteria, which when even freshly cleaned, maintains a subtle aroma of tater tots and throw-up. The schoolyard, where one is exposed to bullying by delinquents and attacks from above by eye-pecking demons. [bird tweets] But all of these pale in comparison to the most horrific location of all. A place teeming with the sweat and secretions from hundreds of unwashed bodies. The swimming pool.

Principal Petersen: Sorry, Sheldon. Water safety is a required part of your P.E. class.
Sheldon: But other kids use that pool. It's basically a big bowl of teenager soup.
Principal Petersen: It's out of my hands. It's a state requirement. If you don't like it, take it up with your congressman.
Sheldon: I did. He won't return my calls.
Principal Petersen: Then I guess you're swimming tomorrow. [manic laughter, thunder clap and lightning]
Adult Sheldon: Except for the laughter, the glowing eyes and the lightning, that's exactly how it happened.

Adult Sheldon: Observation is an important part of the scientific method. Darwin observed the finches, Jane Goodall observed the chimpanzees, and for some reason, Dr. Sturgis wanted to observe my meemaw's new suitor.