Amy: Sheldon, there's something else I've been wanting to say, but before I do, I just... I want you to know that you don't have to say it back.I know you're not ready, and I don't want you to say it just because social convention dictates...
Sheldon: I love you, too.
Amy: You said it.
Sheldon: There's no denying I have feelings for you that can't be explained in any other way. I briefly considered that I had a brain parasite. But that seems even more far-fetched. The only conclusion was love.

I obviously have the flu, coupled with sudden on-set Tourette's Syndrome.

Granted, Penny, your secondary sexual characteristics are reasonably bodacious, but Priya is highly educated, she's an accomplished professional, and she comes from the culture that literally wrote the book on neat ways to have sex. Whereas you on the other hand are a community college dropout who comes from the culture that wrote the book on tipping cows.

Until you manage to upload your intelligence into a self-sustaining, orbiting satellite equipped with high-speed internet and a cloaking device, you will be dependent on the human race.

Amy: This year's donations may go to, say, the geology department.
Sheldon: Oh dear, not the dirt people.

You don't have to be strong for me. Now let's talk about Priya that man stealing bitch.

I'm prone to night terrors, so if I wake up kicking and screaming, don't panic. Just pin me down and stroke my hair and I'll be fine.

I'm regretting my earlier cattiness; she's an absolute delight.

Good news! Thanks to you I was able to make a rhesus monkey cry like a disgraced televangelist.

Bernadette: Leonard's really one of a kind.
Amy: Saying that while holding a snowflake is a bit heavy-handed don't you think?

Amy: I have potential for sexual arousal.
Sheldon: A cross we all must bear.

You do understand that it will distract you from the rich variety of sweet loving that your ex-boyfriend is currently receiving from the fiery jewel of Mumbai.

TBBT Quotes

Leonard: I'm not a crybaby.
Penny: Toy Story 3?
Leonard: They were holding hands in a furnace!

Sheldon: I asked myself what is the most mind-numbing, pedestrian job conceivable and three answers came to mind: a toll booth employees, an Apple store genius, and what penny does. Because I don't like touch other peoples' coins and I refuse to contribute to the devaluation of the word genius, here I am.