Doakes: Jesus Christ, Morgan. Jesus fuckin' Christ. You're the Bay Harbor Butcher.
Dexter: I really hate that name.
Doakes: Jesus Christ, man.
Dexter: You said that.

I mean, that guy's clearly a freak, but I don't know him.

Lumen [on Vince]

Lumen: Share something with her - what you did when you were her age.
Dexter: I killed the neighbor's dog.
Lumen: Well, don't tell her that.

Dexter Morgan: I like to pretend I'm alone. Completely alone. Maybe post-apocalypse or plague... Whatever. No-one left to act normal for. No need to hide who I really am. It would be... freeing.
Sergeant Doakes: [Doakes seemingly walks up out of nowhere] Stop grinning like a fucking psycho and get back to work!

I love Halloween. The one time of year when everyone wears a mask... not just me. People think it's fun to pretend you're a monster. Me, I spend my life pretending I'm not. Brother, friend, boyfriend - All part of my costume collection. Some people might call me a fraud. Let's see if it will fit. I prefer to think of myself as a master of disguise.

Dexter Morgan

I love you, bro, but sometimes you're a fucking 'tard.

Deb

I've never been around so many people who made me feel normal. [Pause] Really normal.

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

Ever hear of a comb? Looks like you have a cat on your head.

Deb

I can kill a man, dismember his body, and be home in time for Letterman. But knowing what to say when my girlfriend's feeling insecure... I'm totally lost.

Dexter Morgan

(voice over) There are many ways to stop the heart, electric shock, bad diet, sever the aorta, my personal favorite, but to start one beating, this is a first.

We all have secrets, Deb. Some of them shouldn't be found out.

Dexter Quotes

Deb: (excitedly) A baby? a motherfucking rolly-poly, chubby cheeked shit machine? Are you kidding me?
Dexter: I've never heard it described in quite those words before, but yeah.

[narrated, in reference to Doakes] My devil danced with his demon and the fiddler's tune is far from over.

Dexter Morgan