Howard: Raj! Stop! [panting]
Raj: What? What are you doing here?
Howard: Look if you're getting on that plane because you love Anu and you can't stand the thought of spending another day without her then go. If not then stay here with the people who love you.
Raj: But what if this is my last chance at marriage and family?
Howard: I promise you it's not. Believe me, somewhere out there is a woman who loves cooking shows and sweater vests and all the other dumb things you love.
Raj: You really think so?
Howard: Yes. And I don't think she's waiting for you in England. When you propose to someone in Notting Hill it should be to someone who knows what that movie is.
Raj: Are you saying you're just a boy standing in front of another boy saying you don't want him to leave?
Howard: Sure.

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.

Josh: So, I have to ask, was the robot sexy?
Howard: It was actually just a mechanical hand.
Josh: 'Cause that's all you need, right?
Howard: You are my brother.

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

Sheldon: I'm looking over my text correspondence with Beverly and I don't see anything that would have given her offense. Nothing's ambiguous, I spell everything out. Including "laugh out loud" and "what's the fracas?"

Amy: Are you really not gonna pick up your mother?
Leonard: No. It's fine, she likes to take a cab or a shuttle. That way she can meet people.
Amy: Well, that's kind of nice.
Leonard: Yeah, she always says that a stranger is just a person whose emotional weak point you haven't found yet.
Sheldon: Your mom is the best.

Leonard: How was your flight?
Beverly Hofstadter: There were some parents with a baby. A lot of crying.
Leonard: Well, babies do that.
Beverly Hofstadter: No, it was the parents. It seems they couldn't handle some constructive criticism.