Dr. Foreman: You figure that anybody that gives a crap about people in Africa must be full of it?
House: Yes. There's an evolutionary imperative why we give a crap about our family and friends. And there's an evolutionary imperative why we don't give a crap about anybody else. If we loved all people indiscriminately, we couldn't function.
Dr. Foreman: Hmmm. So, the great humanitarian's as selfish as the rest of us.
House: Just not as honest about it.
House: [knocking on Dr. Wilson's door.] I know you're in there. I can hear you caring.
Dr. Wilson: If you have the money then why did you need the loan?
House: I didn't. I just wanted to see if you'd give it to me. I've been borrowing increasing amounts ever since you lent me $40 a year ago. Ummm, a little experiment to see where you'd draw the line.
Dr. Wilson: You're...you're trying to objectively measure how much I value our friendship.
House: It's five grand – you got nothing to be ashamed of.
Dr. Wilson: Now, be a grown-up and either tell Mommy and Daddy you don't want to see them, or I'm picking you up at seven for dinner.
House: What do you mean? You just said...?
Dr. Wilson: I lied. I've been lying to you in increasing amounts ever since I told you you looked good unshaved a year ago. It's a little experiment, you know, to see where you'd draw the line.