Stuart: I can't believe she's gone. That woman took me in. If it wasn't for her, I would have been homeless.
Amy: One of us would have taken you in.
Stuart: Yeah, I don't recall any offers. But you know what, I'm glad it worked out the way it did, because I got to know this wonderful person.

Sheldon: How about this one?
Amy: He's barely moving. He looks half dead.
Sheldon: I know. I like him too.

Amy: Okay, that's enough.
Penny: What, no. I really want to know what happens. And Bernadette really, really, really wants to know what happens.

Sheldon: So you're saying you wouldn't leave me for the chance to be one of the first humans to colonize another planet?
Amy: I would at least mention it before filling out the application.
Sheldon: Hmm. That's exactly what Leonard, Wolowitz, Koothrappali, Bernadette and Penny said.

Leonard: Uh, Mom, hey, tell Mary the story about how I made a Van de Graaff generator out of our vacuum cleaner.
Beverly Hofstadter: All right. He broke the vacuum cleaner.

Raj: Before you finish, is this a story about patience or waiting, or just another reminder that you went to space?
Howard: A story can do two things.

Amy: We could also be the first people to procreate on Mars.
Sheldon: You just can't keep it in your space pants, can you?

Sheldon: What should we name him? I came in thinking Seth, but he kinda looks Italian.

Leonard: You wrote a paper on my idea?
Sheldon: I wrote a paper on our idea.
Leonard: When did my idea become our idea?
Sheldon: When I mixed it with Sheldony goodness and cooked it in the Easy Bake oven of my mind.

Sheldon: *singing in the tune of "Bingo Was His Name-o"* There was a scientist who had a theory, and James Clerk Maxwell was his name-o. J-A-M-E-S, C-L-E-R-K, space, M-A-X-W-E-L-L, and James Clerk Maxwell was his name-o. There was a scientist who had a theory, and James Clerk Maxwell was his name-o. *claps* A-M-E-S--
Leonard: Okay, okay, we get it.

Howard: Your entire job is to find lost luggage and you've narrowed down the location of my mother to the planet Earth?

Sheldon: The truth is, I can no longer balance a full time career, a popular Internet show, and a girlfriend.
Amy: And he really does have one, you jerks on the comment board.

Sheldon: Let it go? I have heard that my whole life. Every time something upsets me, someone says let it go. Like it's my fault and it's not okay to feel the way I feel.

Sheldon: Oh, I know, the person I'd most like to have dinner with is myself.
Penny: You sure that's your choice, because I've had that dinner.
Sheldon: Well, I haven't. And although they say never meet your heroes, I just don't see how I could disappoint.

Bernadette: How was your prom? Did you go?
Amy: No, but I was on cleanup crew.
Penny: Aw, that's sad.
Amy: No, it was okay. The DJ let me dance one slow dance with my mop before he shut down. Whenever I see a bucket of dirty water, I still hear Lady in Red.