Leslie: Hey fellow scientists. Sheldon.

Leslie: You agree with me, right, loop quantum gravity is the future of physics.
Leonard: Sorry Leslie, I guess I prefer my space stringy not loopy.
Leslie: Well, I'm glad I found out the truth about you before this went any further.
Leonard: Truth, what truth? We're talking about untested hypotheses, uh, it's no big deal.
Leslie: Oh, it isn't, really? Tell me Leonard, how would we raise the children?

Leonard: I guess we let them wait until they're old enough and let them choose their own theory.
Leslie: We can't let them choose, Leonard, they're children!

Penny: Sheldon, you are a smart guy, you must know-
Sheldon: Smart? I'd have to lose 60 IQ points to be classified as smart.

Raj: (Talking about Leslie Winkle) I think she's smoking hot.
Howard: I'd hit that!
Sheldon: You'd hit particulate soil in a colloidal suspension. (Seeing Howard's confusion) Mud.

Raj: What happens in costume at comic-con stays at comic-com.
Howard: You're only saying that because of what happened to you.
Leonard: What happened to you?
Raj: Nothing happened to me.
Howard: It wasn't your fault, Raj, he was dressed like a green Orion slave girl.
Raj: How did we get on me, we were mocking Leonard for not moving on, dude, you have totally not moved on.

Leslie: Hey, dummy.
Sheldon: Hello to you, insufficiently intelligent person.
Leslie: Ooh, rush me to the burn unit.

Leonard: Well, I think tonight was a very good start.
Leslie: Me too. You're sure you're okay postponing intercourse until our relationship is past the initial viability test?
Leonard: No problem, I'm very skilled at postponing intercourse. So I guess I'll call you and we'll arrange another evening.
Leslie: Yes. I believe protocol dictates that you wait a minimum of 18 hours before you call so I'm not repulsed by your cloying eagerness.
Leonard: Sure.
Leslie: Again, it's your decision, you're the man.

Sheldon: I fashioned historically accurate undergarments out of linen.
Leonard: You went out and bought linen?
Sheldon: Don't be silly, I borrowed one of your pillow cases.
Leonard: Borrowed?

Sheldon: The only way she'd be able to make a contribution to science is if they resume sending chimps into space.

Sheldon: That was not fifteenth century soap. My God, these people need to learn you can't just put "ye olde" in front of anything and expect to get away with it.

Sheldon: Friday's always vintage game night. Look, my mom included the memory card. We can pick up where I left off in 1999 when I had pernicious anaemia.

Sheldon: Hello to you, insufficiently intelligent person.

Leslie: Oh. So, how many children do you think we should have?
(Leonard splutters)
I'm sorry, that was a little abrupt.
Leonard: A little.
Leslie: I mean there are so many things to talk about before we discuss reproduction.
Leonard: I sure hope so.
Leslie: Besides shortness, what genetic weaknesses run in your family?