Sheldon: And just remember, I am proud of you and I support you in all that you do.
Amy: Thank you. That means a lot.
Sheldon: Oh, and one last thing. If you find yourself working with a male scientist who's as smart as me, as tall as me and has hair like Thor, well, then I want you to step away from the situation and call me immediately.

Sheldon: Leonard pointed out to me that I'm not always a loving and supportive boyfriend, so here's some quality luggage.
Amy: Thank you.
Sheldon: The salesman said it could survive a plane crash, so perhaps you should fly inside it.

Howard: Well, why would you do that?
Colonel Williams: You guys completed phase one, we'll take it from here.
Sheldon: Where did you move it?
Colonel Williams: I can't tell you that.
Leonard: Are you implementing phase two?
Colonel Williams: I can't tell you that.
Sheldon: Wait, so you're just going to take all the work we've done for the last year and toss us aside?
Colonel Williams: That one I can tell you, yes.
Howard: This is all very upsetting.
Colonel Williams: I'm sorry to hear that. As you know, the primary focus of the United States military is people's feelings.
Sheldon: If that's sarcasm, please save it for our enemies.

Raj: I really can't thank you enough for taking me in. You know, I was in a pretty low place in my life, and-
Sheldon: (from across the hall) Oh, Amy, you naughty vixen.
Raj: Anyway, uh, as I was saying, I was at a pretty low place in my life and, uh, if it wasn't for friends like you-
Amy: (from across the hall) My goodness, that form of stimulation is highly efficient.
Raj: I can't compete with that.

Leonard: Should we give them their privacy?
Penny: I want to, but I don't think I can.
Sheldon: (from across the hall) Whoopee!
Penny: Okay, I'm good now.

Amy: Do you think it's possible you might enjoy being on your own for a little while?
Sheldon: It's hard to say. I've never really lived by myself. What if I become strange and eccentric?
Amy: I'll love you no matter what.
Sheldon: Howard Hughes saved his urine in milk bottles.
Amy: We'll cross that bridge when we come to it.

Amy: I made your favorite oatmeal - plain.

Sheldon: All right, then. Let's go to the bedroom, remove our clothes, fold them neatly, and engage in frenzied lovemaking.
Amy: What if we don't fold our clothes at all.
Sheldon: I d- ... or what if we fold them?

Leonard: First thing tomorrow morning, we're back at it.
Raj: Without me.
Sheldon: I hope his character doesn't make it into the movie; he's kind of a bummer.

Amy: You know, what you need to do is put this Air Force project behind you and just dive into something new.
Sheldon: Well, there is our quantum cognition experiment. You and I could spend more time on that.
Amy: Oh, I don't know, I mean, let's say we succeed in proving that our consciousness creates reality.
I mean, what will we have really accomplished? You know, a loaf of bread's still three bucks.

Amy: I was offered a summer research fellowship at Princeton.
Sheldon: Princeton? A fine institution. The place where Albert Einstein taught. And where Leonard got his PhD, so it may have gone downhill.

Sheldon: I may have lost my guidance system and my girlfriend, but I still have a colon full of yesterday's meals to keep me company. Although, thanks to your high-fiber breakfast, I'm sure that'll be leaving me, too.

Leonard: What are you doing?
Sheldon: What does it look like? I'm playing sad harmonica in an apartment as empty as my heart.
Raj: Why?
Sheldon: I got the blues. My baby done left me.

Sheldon: Uh, I know it's not your birthday, but if you're interested-
Amy: I am.
Sheldon: Okay. Oh, and just to be clear, I'm not being intimate with you in order to keep you from going.
Amy: I wasn't thinking that.
Sheldon: Well, no, it's just, I'm just warning you, you know, if you find yourself 3,000 miles away and craving a hit of this, you know I can't Skype it to you.
Amy: That's a risk I'm willing to take.
Sheldon: All right, then.

Amy: Where are you moving?
Penny: And when? But a-also where?