I know I never would have gotten this far without you.

Beckett (to Castle)

Button up kitten because we're going home.

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.

Beckett: Castle, wait.
Castle: I did three months.
Beckett: I know you're angry
Castle: You're damn right I'm angry. I watched you die in that ambulance you know that? Do you know what that's like? to watch the life drain out of someone you care about?

The evidence isn't the whole story.

Castle: I was thinking it's time for a new tradition.
Beckett: Me too.

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.

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

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.

You get cute when you get angry. Not when you get angry with me.

Castle (to Beckett)

She took my coffee, Castle!

Beckett: So, you rich or something?
Castle: I'm not James Patterson rich, but I do ok.

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