Sheldon: [on the phone] Hello, Dr. Bowers, it's Sheldon Cooper. I need you to administer more anesthesia to me. No, I don't have a dental problem. I need to reenter a trancelike state so I can communicate with Thoth, the god of knowledge. I would argue that the greatest discovery in physics is worth losing your dental license. Well, it's not my fault you let them publish your home phone number.

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.

Sheldon: So none of you can help me?
Albert Einstein: I believe I can. Sheldon, if I was offered a choice between all the knowledge of the universe or the endless pursuit of it, I would choose the pursuit.
Sheldon: That's very insightful.
Richard Feynman: Hold it, hold it... He didn't come up with that! He stole it from Gotthold Lessing.
Professor Proton: Who's-who's Gotthold Lessing?
Cyndi Lauper: [v.o.] He's an 18th century German philosopher. Now do you mind? We girls are trying to have some fun over here.
Einstein: Apologies.
Richard Feynman: Sorry, Cyndi Lauper.
Stephen Hawking: Our bad.
Professor Proton: I-I like fun.

Ms. Hutchins: Hi, Sheldon, what can I do for you?
Sheldon: Do you have any books or videos on the Lamaze technique?
Ms. Hutchins: Uh-oh. Georgie get that girl pregnant?
Sheldon: It's for me. I need to have a tooth pulled, and I'd like to do it without putting my brain on drugs.
Ms. Hutchins: Okay.
Sheldon: I've seen that commercial with the egg in the frying pan. Very effective.

Georgie: Can I at least change the music we play here?
Dale: What's wrong with the music we play here?
Georgie: Nothing, it's just kind of grandpa music.
Dale: Well, how is this "grandpa music"?
Georgie: Do you listen to it?
Dale: Yeah.
Georgie: Do you have grandchildren?
Dale: Yeah.
Georgie: Do you see where I'm going with this?