Raj: I'm sorry, guys. Sheldon was upset, Leonard and Penny were fighting. I just wanted to go someplace where I wasn't causing problems.
Howard: (sighs) I'll say it again. India.

Penny: Well, it's like that science thing. For every action, you have a gigantic and annoying reaction.
Leonard: Just when I thought you couldn't get any hotter.

Bernadette: What's so funny?
Howard: Raj is looking for a cheap place to live, and I wrote "India."
Bernadette: Don't post that; be supportive.
Howard: Maybe you should be supportive of my hilarious jokes.

Sheldon: What if she's correct? Doesn't that say something troubling about us?
Amy: I don't know. I just think you're the kind of person who likes a contingency plan.
Sheldon: That is true. Did you know I figured out in which order I would eat all my friends in the event of an apocalypse?
Amy: You need to stop hanging out with your brain so much. It's not a good influence.

Amy: There are a lot of memories wrapped up in that room. For me, too. The first time you told me you loved me was in that room.
Sheldon: Wrong. We were standing outside my room in the hallway.
Amy: And there is the love of which I speak.

Amy: This isn't about me and Sheldon. This is about Rajesh moving in with Leonard and Penny.
Beverly Hofstadter: Interesting. They've found a need to take yet another roommate. Seems they're avoiding some harsh realities themselves.
Sheldon: I had no idea all our relationships were such a disaster. Boy, you're good.
Beverly Hofstadter: That is the word on the street, dear.

Raj: Maybe moving in was a bad idea. I haven't been here one day, I'm already causing problems.
Penny: You didn't do anything. It's Sheldon.
Leonard: "You didn't do anything.It's Sheldon." That'd make a nice needlepoint pillow.

(Leonard standing outside the door to Sheldon and Amy's apartment)
Leonard: Help! Cinnamon's loose in the building!
Sheldon: (Inside) Amy, quick, lock the door!

Sheldon: I spoke with Leonard's mother, and she made me feel better.
Leonard: I don't know who you talked to, but that wasn't my mother.

Beverly Hofstadter: Now You've recently moved in with Dr. Fowler, yes?
Sheldon: I have.
Beverly Hofstadter: Clearly, your old room represents an escape hatch, and without it, you're forced to confront the terrifying reality of being trapped in a relationship with Amy forever.
Sheldon: I hadn't thought about that.
Amy: And don't start thinking about it now!
Beverly Hofstadter: Hello, Amy. Your defensiveness may indicate similar insecurities about your relationship with Sheldon.
Amy: That's not true!
Beverly Hofstadter: She said defensively.

Sheldon: Hey, Raj, I owe you an apology. Look, could you please put your dog on a leash?
Raj: Sheldon, she's fine.
Sheldon: Well, then at least hold her still so I can pretend she's stuffed.

Sheldon: Oh, and FYI, if you cry while they're fighting they'll take you to McDonald's.

Stuart: (Storming into Howard and Bernadette's room with a baseball bat) Not on my watch!
Bernadette: It's fine. It's just Raj. You can hit him with the bat, but it's fine.

Sheldon: Beverly believes I unconsciously consider my old room an escape hatch.
Amy: Is that bothering you?
Sheldon: Yes. I don't care for unconscious thoughts. My brain and I are best friends. It should tell me everything.
Amy: I mean, how it relates to our relationship, not the bromance between you and your brain.

Sheldon: Well, I think it's very nice that you're helping out our friend.
Leonard: I think it's nice that you're taking whatever medication Amy's clearly giving you.