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?

[Sheldon is chuckling as he stares at a blank screen]
Missy: What are you doing?
Sheldon: Watching last week's Professor Proton in my mind.

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: Per the student dress and grooming code, this boy's hair is too long. This boy's wearing sports attire outside a designated area. And this girl's blouse is diaphanous, which means I can see her brassiere.

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]

Pastor: In Matthew nine, verse four, Jesus said, "Why would you entertain evil thoughts in your hearts?"
Sheldon: Do you have evil thoughts?
Mary: Ssh.
Sheldon: I just don't think this part applies to me.
Mary: That's fine. Be quiet and listen.
Sheldon: I'm only nine years old. Most evil doesn't start till puberty.

Mary: [prays] Please watch over Missy and Sheldon and especially Georgie. And please don't let my failings as a mother get in the way of Your plans for their lives. Amen. [gasps] Hey, baby. What's wrong?
Sheldon: Is it that obvious?
Mary: Well, you are outside, where birds live.
Sheldon: True. I'll make it quick. I'm experiencing what the Germans call weltschmerz.
Mary: Uh-huh. And what do Americans call it?
Sheldon: The pain of the world.
Mary: Sounds more fun in German.
Sheldon: Most things do.

Mary: How about we lose the bow-tie?
Sheldon: Why?
Mary: Look around, honey. No of the other kids are wearing one.
Sheldon: Well, perhaps I'll start a fad.

Sheldon: [on the phone] Hello. Yes, you can help me, Dorothy Fitzpatrick. I'm interested in taking out a second mortgage. I'm nine years old. Why do you ask? That's called age discrimination, Dorothy, but I'm willing to let it slide. I'm glad you find me cute, but I'm deadly serious. I need funds to buy a computer. No, the house isn't in my name. I'm nine. We've established this. I do prepare the taxes for my parents, and if we tighten our belts, we'll have sufficient equity for the loan.

Missy: Why don't you believe in God? [Sheldon raises his hand] Sheldon.
Sheldon: Because science explains the universe without the need of inventing a supernatural being.
Missy: But how do you know for sure He doesn't exist?
Sheldon: Ooh. [raises hand]
Missy: Stop that.
Sheldon: The burden of proof isn't on me. If I said there was an invisible monkey in the room with us, you shouldn't believe me just because you can't prove me wrong.

George Sr.: Does he really have to walk around with that?
Mary: He's fine. Leave him be.
Missy: You're just begging to get beat up.
Sheldon: I'm more concerned about the biggest bully of all: the Sun.

George Sr.: You're not gonna make it in this school if you keep ratting people out.
Sheldon: But they were breaking the grooming codes and the dress codes. I saw one boy with a t-shirt that said... [leans in and whispers] "Bite me".
George Sr.: Yeah, that's terrible. [Sheldon nods]

Mary: That's enough. Now, let's pray.
Sheldon: A moment please.
George Sr.: Hmm.
Mary: Leave him be.
George Sr.: He can hold hands with his family. It won't kill him.
Sheldon: We don't know that.

George Sr.: Sheldon, I need to get in there.
Sheldon: Poop at Meemaw's!

Ms. MacElroy: What?
Sheldon: Also in violation of the grooming code on page 48, article five, subsection B, you have a bit of a mustache.

Sheldon: [observing the older kids outside the high school] Oh dear.

Sheldon: I want to understand God. Can you help me?
One: Did you not hear what we just said?
Zero: It's a binary universe.
One: God is yes and no.
Zero: Left and right.
One: On and off.
Zero: Something and nothing.
One: Positive and negative.
Zero: Male and female.
One: Light and dark.
Sheldon: But why is there evil and suffering?
Zero: Well, without evil and suffering, there is no good and happiness.
Sheldon: Oh, sure. Binary.

Meemaw: Here, have some tea.
Sheldon: Chamomile?
Meemaw: Yes.
Sheldon: One teaspoon of honey?
Meemaw: Yes.
Sheldon: An ice cube to cool it off?
Meemaw: I went with two today. You've been through enough.
Sheldon: [drinking] I prefer one ice cube.
Meemaw: Drink it!

Sheldon: Just think. You'll have this table all to yourself.
Tam: Actually, I joined the jazz band. Those guys have their own table in the cafeteria.
Sheldon: Oh.
Tam: They're pretty cool. The drummer's even got a goatee.
Sheldon: Well, I'm glad I knew you before you became a heroin addict.

Mary: Everybody excited to start school Monday?
Sheldon: I am.
Missy: I guess so.
Mary: Georgie? Freshman year, that's a big deal.
George Jr.: How can I be excited when he's gonna be in the same grade as me?
Sheldon: Don't worry, Georgie. I'm not planning on being in the ninth grade for very long.