Penny: No, I've been reading Bernadette's parenting book. It's like the answer key to the Sheldon test.

Penny: Is it possible that you're stressed because you're scared about getting married? I mean, it is a big change, and you're not good with little changes.
Sheldon: Well, that's nonsense. You name one little change I was upset with.
Penny: Uh, when they changed the green Skittle from lime to apple.
Sheldon: That is not the rainbow I grew up tasting.

Amy: Sheldon, I have an advanced degree in the study of the human brain, so if my fiancé is a raving lunatic, it's kind of a ding on my reputation.
Sheldon: If leaders just stepped aside every time they didn't have the consent of the governed, what would we have?
Amy: Democracy.
Sheldon: Not on my watch.

Sheldon: Are you having an allergic reaction to my boutonniere?
Leonard: No. I'm just so happy for you. And for me. After today, you are officially - and, more important, legally - Amy's problem.
Sheldon: Don't be silly, Leonard. I will always be your problem.

Sheldon: Oh, Amy. Good, you're here.
Amy: Hi. What's up?
Sheldon: How would you like to be on television?
Amy: Is it gonna be a news story where I have to say you were quiet and kept to yourself and I'm as shocked as anyone?

Sheldon: Until next week, this is Professor Proton saying, 01000010 01111001 01100101. That's "Bye" in ASCII binary, or good-binary.

Sheldon: Neither of them will be the actual cake. I'm just using it as a bargaining chip to get Amy to agree to the whole wedding party getting rings and us getting one ring to rule them all.
Howard: I forget, which mental hospital are you guys registered at?

Leonard: Do you guys have a location yet? 'Cause you don't have a lot of time.
Amy: Hey, it took us nine months to pick a date, and a week to decide if brains can have lips on them, so get in the boat and row.

Howard: Look, I I can see you're upset, but I'm gonna need some ground rules. I mean, while we're apart, can I see other needy Indian men?

Sheldon: Amy, I usually know exactly what to say. But in this moment I have no words.
I guess I'm overwhelmed by you. In a good way. Not in the elevator in the Haunted Mansion way. Even if I can't tell you now how I feel, I will spend my life showing you how much I love you.

Sheldon: Sorry, but when you make a discovery like this, you don't just take it down to City Hall. You tell the whole world. And so I'll say it in Latin or Klingon or smoke signals, if that's not cultural appropriation.
Amy: It is.
Sheldon: Okay, so not smoke signals.

Barry Kripke: At wast, my wove has come awong, my wonewy days are over, and wife is wike a song, oh, yeah.

Penny: Leonard thinks when we broke up, it didn't bother me.
Zack: That's crazy. When we were going out, she used to talk about you all the time. In fact, I think she only dated me because I reminded her of you.
Leonard: Sure. Because we're both people?
Zack: Damn right we are.

Penny: I'm not leaving you for Bill Gates.
Leonard: You sure? I bet his Internet's really fast.

Sheldon: So with this level of high-power laser array, we would actually be able to solve the black hole information paradox once and for all.
President Siebert: That's impressive, and how much funding were you looking for?
Sheldon: $20 million.
President Siebert: Really? You think you can build that for $20 million?
Sheldon: Not a chance.
President Siebert: I'm sorry, then why are you asking me for it?
Sheldon: Because once you've spent $20 million, you're much more likely to give me an additional 50.
President Siebert: So actually, what you're saying is with $70 million, you can build this.
Sheldon: I can see why you'd think that, but no. You can't go to the board of trustees and say you gave Sheldon Cooper $70 million and have nothing to show for it. No, the only way you'd be able to save face is to double down.
President Siebert: So 140?
Sheldon: And then double again.
President Siebert: 280?
Sheldon: And then - good news - not quite double again. So, uh, what do you say? We have a deal?