Let's Give the Boy a Hand

Dexter 1×4

& Harry: Dexter, what’s your problem?
    Dexter: I hate the beach. it’s sandy and gross and nasty, and I want to go home.
    Harry: Too bad. You’re part of a family. And being part of a family means smiling for photos.
    Dexter: Why should i pretend I’m happy?
    Harry: Because it’ll make your mom happy, and because it’s how you fit in. {...} This is how you do it. When somebody takes your picture, you smile. It doesn’t matter if you’re happy or not. You just do it to fit in.

& Dexter: 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.

& Harry: You can’t be a bully, Dexter. First of all, it’s wrong. Secondly, people remember bullies. People like me — cops. A bully is a felony waiting to happen. So...
    Dexter: Blend in.

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& Dexter: That was... unexpected.
    Rita: Yeah. For me, too.
    Dexter: Mmm. I have no problem with... unexpected.

& Dexter: Everyone hides who they are at least some of the time. Sometimes you bury that part of yourself so deeply that you have to be reminded it’s there at all. ... And sometimes you just want to forget who you are altogether. And what about me?

& Dexter: I’m neither man nor beast. I’m something new entirely, with my own set of rules. I’m Dexter.

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+ quotes on the IMDb