Penny: Look, Sheldon, sweetie, I know you're feeling insecure, but we've really got to go to sleep.
Sheldon: All right. I'll take the first watch and wake you at 0400.
Leonard: Great. Good night.
Penny: Wait, wait, what's 0400?
Leonard: 4 am.
Penny: That's, like, in 45 minutes.
Leonard: Just keep walking.

Leonard: Don't you think looking for a new city to live in is a bit of an overreaction?
Sheldon: Our apartment was broken into, our security system tried to kill me, and as a result, I'm leaving Pasadena forever. Tell me how that's overreacting.
Penny: Come on, Sheldon, you can't move. Don't you need to stay in one place so the mother ship can find you when it returns?
Sheldon: Oh, if that were only true. Unfortunately, as I'm earthbound for the foreseeable future, I need to find a location that's more hospitable than the mean streets of Pasadena.

Sheldon: All right, Boone, North Carolina. Every summer since 1952, Boone has hosted an outdoor amphitheater portrayal of the life and times of its namesake, Dan’l Boone. Sounds like something that would attract the wrong crowd.

Howard: Hey, look who's back!
Sheldon: Interesting. The acquaintance is the first to greet me.