Leonard: ...and when she died, they ate her.
Sheldon: You don't have to sell me on cats, I'm already a fan!

Leonard: So, this is nice. First time we've all gotten together to eat.
Amy (to Sheldon): You're right. He's a festival of humdrum chitchat.
Leonard: Okay, that's all I got. Howard, you're up.
Wolowitz: Um, tell us about your work, Amy.
Amy: I doubt you'd understand. Sheldon tells me you only have a master's degree.
Wolowitz: Raj, do you have any questions for Amy?

Leonard: Did you guys see the paper in the American Physics Journal on supersolids? It's pretty interesting. This guy's working from a hypothesis which ...
Raj: Spoiler alert! Spoiler alert!
Leonard: What?
Raj: Don't ruin it for me, man! I printed out a PDF to read on the potty.

Amy: I'm curious as to why we're not eating alone.
Sheldon: They can't function without me. I'm the social glue that holds this little group together.

Penny: I hear you broke up with Amy.
Sheldon: Breakup would imply she was my girlfriend. She was a girl who was my friend who is now not my friend.
Penny: Wow, It's like the worst country song ever.

Wolowitz: Women, huh? Can't live with 'em; can't successfully refute their hypotheses.
Sheldon: Amen to that.

Someday, when you have varicose veins, I'll show you how to massage them.

Wolowitz

Despite their tendency to build Death Stars, I've always been more of an Empire man.

Sheldon

Penny: God, he's an ass when he drinks.
Wolowitz: He's an ass he doesn't. You just don't hear it.

Leonard: Amy is judgmental, sanctimonious, and frankly just obnoxious
Sheldon: So?
Leonard: So we already have you for all that.

Sheldon: One has to navigate a labyrinth of social nonsense before one could be fed here
Amy: Really? I assumed an establishment named Cheesecake Factory would function more efficiently.
Sheldon: It's how they lure you in. I believe it's called, "bait and switch."

The Big Bang Theory Season 4 Episode 3 Quotes

Leonard: Amy is judgmental, sanctimonious, and frankly just obnoxious
Sheldon: So?
Leonard: So we already have you for all that.

Sheldon: One has to navigate a labyrinth of social nonsense before one could be fed here
Amy: Really? I assumed an establishment named Cheesecake Factory would function more efficiently.
Sheldon: It's how they lure you in. I believe it's called, "bait and switch."