Leonard: Do you remember when you were a kid and you'd watch Professor Proton?
Sheldon: Of course.
Leonard: Well, did he ever make you-- I don't know-- hate science and the people who do it?
Sheldon: What are you saying?
Leonard: I just think it would be better if your contempt for children wasn't so much in the foreground.
Sheldon: Well, you want me to lie?
Penny: Well, it's not lying. It's acting. Sheldon Cooper may not like kids, but Professor Proton loves them.
Sheldon: Interesting. You know, I hadn't really thought of it that way. It's similar to how I'm afraid of dogs, but my D&D character likes dogs, you know? But he's allergic, so he can't be around them.
Penny: Why don't we have a dog?

Sheldon: Woman, you are playing with forces beyond your ken.
Penny: Yeah, well your Ken can kiss my Barbie.

Raj: [to Amy] If you were having Sheldon's baby, would you really want him in the room?
Penny: Yeah, if he's in the room when they're making the baby, I'll give you $10.

Penny: I mean, who even reads Scientific American?
Leonard: It's kind of a big deal.
Penny: If it's such a big deal, how come the biggest celebrity they could get for the cover is a molecule?

Sheldon: Until next week, this is Professor Proton saying, 01000010 01111001 01100101. That's "Bye" in ASCII binary, or good-binary.

Amy: Well, what was wrong with it? You know, did you find it borderline psychotic? I mean, I liked that about it, but you guys discuss.

Sheldon: You can't be Professor Proton. You're not a scientist.
Wil Wheaton: Well, I was never on a starship, but pretending I was bought me this house. And if I'd pretended a little longer, it would have a swimming pool.