Leonard: I just keep thinking how cool it would be if I called my mom and told her that I got tenure at Caltech.
Penny: She'd be proud, huh?
Leonard: Oh, very. Assuming she takes my call.

Leonard: Penny, as a scientist, my job is to figure out why things happen. But I don't think I'll ever understand how someone like me could get to be with someone like you. You know maybe I don't need to understand it, I just need to be grateful. I love you, Penny.

Leonard: What would you be if you were attached to another object by an inclined plane, wrapped helically around an axis?
Sheldon: Screwed?
Leonard: There you go.

Leonard: My point is, while you're spending all this time on your own, building computers or practicing your cello, what you're really doing is becoming interesting. When people finally do notice you, they're gonna find someone a lot cooler than they thought. And for those of you that were popular in high school, it's over, sorry. Thank you. Congratulations.

Sheldon: Well, that's a fine how-do-you-do. (To Amy) Don't just stand there. Take your breasts out.

Amy: Seriously, is that tape? Like, how are they staying up like that?

Amy: You're all wasting your time. Sheldon is the most qualified for the job. And no amount of gravity-defying bosom is going to change that.