The Vampire Diaries, Season 4

Caroline:
If you don't feed me your blood, I'll die.

Klaus:
Then you'll die, and Tyler will have learned his lesson the hard way.

Caroline:
How could you do this to him? To his mom? To me?

Klaus:
I'm a thousand years old. Call it boredom.

Caroline:
I don't believe you.

Klaus:
Fine. Then maybe it's because I'm pure evil, and I can't help myself.

Caroline:
No. It's because you were hurt. Which means that there's a part of you that is human.

Klaus:
How could you possibly think that?

Caroline:
Because I've seen it. Because... I've caught myself wishing that I could forget all the horrible things that you've done.

Klaus:
But you can't. Can you?

Caroline:
I know that you're in love with me. And anyone capable of love is capable of being saved.

Klaus:
You're hallucinating.

Caroline:
I guess I'll never know. (Caroline struggles to breathe)

Klaus:
Caroline? (Klaus saves her)