Howard: Will you talk to her, see if there's any chance at all we could get back together?
Penny: Oh, gee, Howard, I really don't want to get in the middle of this.
Howard: No. Why would you? I'm just another lonely nerd, living with his mother, trying to find any scrap of happiness he can. You know, maybe to make up for the fact that his dad left him when he was 11.
Penny: Okay, I will think about it.
Howard: You know, I've always blamed myself for him leaving. I always thought it was because I wasn't the son he wanted.
Penny: Yeah, I said I'd think about it.
Howard: I wasn't athletic, yeah, I was kind of sickly.
Penny: Okay, fine. Look, look, I'm calling her now! See?
Howard: Thank you.

Howard: You know, I'm really glad you decided to learn Mandarin.
Sheldon: Why?
Howard: Once you're fluent, you'll have a billion more people to annoy instead of me.

Bernadette: Maybe we should get one of those machines to help her up the stairs.
Howard: You mean a forklift?

Sheldon: Sheldon Cooper does not cry.
Howard: That's true, you'd rust.

Leonard: Sometimes your movements are so lifelike I forget you are not a real boy.

Raj: Oh, you're so arrogant. If you were a super hero your name would be Captain Arrogant. And do you know what your super power would be? Arrogance.

Sheldon: Oh, Penny. Penny.
Penny: What's up?
Sheldon: Nothing. I just wanted to make Raj stop talking.