Shut the front door.

The only luxury I really care about is freedom.

Detective Beckett, did you call to tell me a bedtime story?

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

Good thing I'm not a one hit wonder.

You got to watch those silhouettes they can be shifty little bastards.

Beckett: Thanks for having my back in there.
Castle: Always.

Castle: You think I should quit?
Martha: I think you should be honest with yourself about why you're doing this. You had written 22 novels before you met her and you didn't need to spend every day at the police station in order to finish them.
Castle: It's not about the books anymore.

The problem is neither of us are in love.

He's an identical twin who wears glasses. That's the worst disguise since Clark Kent.

You had your hand in my pocket and I didn't even feel it? Do it again!

You want my advice? Never sleep with someone you work with.

Castle Quotes

Rick Castle: That thing in the shower. That is delightful.
Kate Beckett: That is not a routine. That's two naked people singing when there's no one around to see or hear it.

Button up kitten because we're going home.

Beckett