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.

Thats what makes Beckett such a great detective. She invests in the victim.

Castle Quotes

Sometimes the hardest things in life are the things most worth doing.

Castle

Castle: You're not alone in this. I'm here.
Beckett: I know.