Sheldon: Before you do, please give me one more chance to apologize to Emily.
Raj: Oh, God.
Sheldon: Emily, as I'm sure you know, I'm considered an odd fellow. But what you don't know is that, while I often say the wrong thing, in my heart I mean well. I think that you are a smart and wonderful woman, you know? And we all think that you can do better than Koothrappali.
Raj: You know, Sheldon-
Emily: Shh, let him finish.
Sheldon: So, for all the times I've offended you and all the times that I'll offend you in the future, I'm sorry.
Emily: Thank you.

Raj: I don't like bugs, okay. They freak me out.
Sheldon: Interesting. You're afraid of insects and women. Ladybugs must render you catatonic.

Sheldon: Scissors cuts paper, paper covers rock, rock crushes lizard, lizard poisons Spock, Spock smashes scissors, scissors decapitates lizard, lizard eats paper, paper disproves Spock, Spock vaporizes rock, and as it always has, rock crushes scissors.

Sheldon: Why are you crying?
Penny: Because I'm stupid.
Sheldon: That's no reason to cry. One cries because one is sad. For example, I cry because others are stupid, and that makes me sad.

Amy: Hi, Sheldon.
Sheldon: Hello.
Amy: Are you feeling any better?
Sheldon: Physically, yes, but I'm upset because everyone's mad at me for no good reason.
Amy: Why don't you tell me what happened, and in a gentle, loving way, I'll explain to you why you're wrong.

Sheldon: Good. Then I'll be leaving now.
Emily: Oh, it's okay, Sheldon. Come with us.
Sheldon: Oh, that's very kind of you. But I'm sure you'll all have a better time without me. Let's go, Stuart.
Stuart: But I want to stay.
Sheldon: Stuart, now!

Sheldon: Raj, you were being a good friend, and my illness was no excuse for my behavior. I hope that you can accept my apology.
Raj: Of course I do.
Sheldon: And, Emily, I'm sorry for saying dermatologists aren't real doctors. And I'm sure you're tired of hearing that.
Emily: Do you honestly think I hear that a lot?
Sheldon: Well, I would imagine when your job is popping zits and squirting Botox into old lady faces-
Raj: Okay! Okay, the point is that we accept your apology.
Emily: Uh, maybe you do. He just insulted me again.
Raj: Yeah, but he doesn't mean it.
Emily: Why are you defending him?
Sheldon: I believe I can answer that. Uh, like me, Raj is demonstrating empathy.
Now, why don't you accept my apology, receive your free T-shirt, uh-- I hope extra small is okay. For some reason Wolowitz took a medium.