The Vampire Diaries, Season 4

Klaus:
Ah, yes, for the love of Elena. How is it that she manages to overlook every horrific thing you've ever done? Is it willful ignorance or perhaps something more pathological?

Damon:
Some people are just more capable of forgiveness than others. Bet you score about a negative 500 in that realm.

Klaus:
Come on. There must be a secret. It can't just be the sire bond. What is it? Compulsion? Manipulation? What is it you say to her?

Damon:
I think this has something to do with a certain blond vampire. I think you murdered Carol Lockwood, and I think you're worried that Caroline's never going to forgive you.

Klaus:
You've done worse.

Damon:
Debatable. See, I don't mind being the bad guy, because somebody has to fill that role and get things done. You do bad things for no reason. You do them to be a dick.

Klaus:
Debatable.

Damon:
If you're going to be bad, be bad with purpose. Otherwise you're just not worth forgiving.