Castle: You see, I'm honoring you by inviting you into my territory and Linus is part of that territory.
Beckett: And if you want to be invited into my territory again, you should probably rethink that.

Did I throw a party and forget again?

Button up kitten because we're going home.

Beckett

Sometimes it's the people we think we know best that we don't really know at all.

Beckett: (Clears throat) Ahem. What's the deal with men and boobs, anyway?
Castle: Biological. We can't help it.
Beckett: But doesn't it bother you that they're so obviously not real?
Castle: (Pauses) Santa's not real. We still love opening his presents.

Castle: So, if I wake up bald tomorrow, you will still be attracted to me?
Beckett: Ehh.
Castle: No you wouldn't!
Esposito: With that pumpkin head? Come on.

Normally, I would be happy for them.

Esposito

The fact is that I admire your loyalty and hope you can feel that way for me someday.

Gates

Beckett: He's a human killer with a human motive.
Castle: He's a zombie killer with a zombie motive. Eating brains.

Even as a hostage I help you solve murders. Beckett, I think you have the perfect partner.

Stop, you are a terrible actress.

Martha

Money doesn't change who you are, it just magnifies your personality.

Castle Quotes

I need time to stop being mad and you need time to figure out a way to be OK with this.

Alexis

I tried to stay in the car I really did.

Castle