Sheldon: Hello, this is Sheldon Cooper. Can I please speak with Pastor Jeff?
Pastor Jeff: Hey, Sheldon, what can I do for you?
Sheldon: I need to give a speech at school, but I have a fear of public speaking. Since you give a sermon every Sunday, I was hoping you'd have some words of advice.
Pastor Jeff: As a matter of fact, I do. When I look down on my congregation and I feel nervous, I just ask the Lord to speak through me.
Sheldon: Like a ventriloquist?
Pastor Jeff: Not exactly. I think of it more as a-
Sheldon: Like one of the Muppets?
Pastor Jeff: No, not that either.
Sheldon: 'Cause you do look a little like Kermit.
Pastor Jeff: Uh, okay, good luck to you, Sheldon.

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: Sheldon, faith means believing in something you can't know for sure is real. And right now, I am struggling with that.
Sheldon: So you don't believe in God anymore?
Mary: That isn't something for you to worry about. I need to figure this out myself.
Sheldon: Can I help? Maybe I could provide a fresh perspective.
Mary: I don't think so, baby.
Sheldon: Did you know that if gravity were slightly more powerful, the universe would collapse into a ball?
Mary: I did not.
Sheldon: Also, if gravity were slightly less powerful, the universe would fly apart and there would be no stars or planets.
Mary: Where you going with this, Sheldon?
Sheldon: It's just that gravity is precisely as strong as it needs to be. And if the ratio of the electromagnetic force to the strong force wasn't one percent, life wouldn't exist. What are the odds that would happen all by itself?
Mary: Why are you trying to convince me to believe in God? You don't believe in God.
Sheldon: I don't, but the precision of the universe at least makes it logical to conclude there's a creator.
Mary: Baby, I appreciate what you're trying to do, but logic is here. And my problem is here.
Sheldon: Well, there are 5 billion people on this planet and you're the perfect mom for me. What are the odds of that?

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.

Sheldon: Mr. Givens, I just wanted you to know that I'm still working hard on my campaign to get more funding for the science department.
Mr. Givens: Oh, great, 'cause I've got to dig up tomorrow's worms myself.

Adult Sheldon: Not all science is created equal. There's physics, the undisputed king of science.
There's chemistry. It's no physics, but it's not a bad way to pass a rainy afternoon. And then there's biology, the squishiest of the sciences.

Principal Petersen: [screams]
Sheldon: [screams]
Principal Petersen: What are you doing, standing there?
Sheldon: I wrote a formal complaint letter to the school board on how much money is spent on football. I was hoping you could deliver it to them.
Principal Petersen: You do realize your father's a coach here.
Sheldon: Yes, sir, I do.
Principal Petersen: Maybe you ought to talk to him about this first.
Sheldon: I did. He didn't care for the idea at all.
Principal Petersen: Well, there you go.
Sheldon: There I go what?
Principal Petersen: Let me see that. "Barbaric sport encourages bloodlust similar to Roman gladiator games Christians, lions money better spent on science and learning." You're joking, right?
Sheldon: Did you see the word "bazinga" anywhere in that letter?
Principal Petersen: Out.