How is it I can kill people and feel no regret, but disappointing Rita makes me feel like the scum of the earth?

Dexter: My dark passenger is ruining my life.
Harry: It is your life.

I need to be a good brother now, so I can be a good serial killer later.

Dexter: Who am I right now: Dexter Morgan serial killer or Dexter Morgan brother?

Love thy neighbor? Bullshit. I should leave it alone, go inside, watch the History Channel.

If I can make the police think the Trinity Killer is someone else, Arthur is all mine.

Deb: Where you off to?
Dexter: Kill a guy you're looking for. Save a kid. Remember to pick up diapers.

Dexter: He's never taken a child before.
Harry: That you know of. If this is new, it's on you.

I know that look. I'm not the only one on a stalk.

Trinity: Confession is good for the soul.
Dexter: All the more proof I have no soul.

Scheduling my activities around her Downward Facing Dog could prove challenging.

I really do need to stab something.

Dexter Quotes

I don't wanna step on my dick.

Deb

Sometimes partners find us, and as much as we try to push them away, they work their way into our lives, regardless - until we finally realize how much we need them.

Dexter