Beckett: I can't help but wonder how many other girls have gotten this tour.
Castle: I'm not going to deny that I have brought other women up here. But, none of them were you.

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

You're in a room full of detectives and not one of them has a clue.

Castle: I so wish I could kiss you right now.
Beckett: Yeah, I know.
Castle: This is me, softly touching your face, pulling you in for a long slow kiss.
Beckett: This is me, kissing you back, running my fingers through your hair.

The butler did it!

Beckett: Do you think I should talk to her?
Castle: No, she will eat you alive.

Castle: You owe me big time.
Beckett: I don't know if the department can reimburse you for all of this.
Castle: That's not the kind of owing I'm talking about.

I'm a best selling author. Why wouldn't I have two grand in my pocket?

I'm getting soft.

My little girl is going to college.

Castle: You and I were just friends for four years.
Beckett: You were trying to sleep with me the whole time.

Beckett: Castle, what do you think of this one?
Castle: Sexy.

Castle Quotes

I can't help it if you got off by putting things in my mouth.

Beckett

Castle: They're going to kill you Kate, and if you don't care about that, please think about how that's going to affect the people who love you. You really want to put your dad through that? What about Josh?
Beckett: And what about you Rick?
Castle: Well of course I don't want anything to happen to you. I'm your partner, I'm your friend.
Beckett: Is that what we are?
Castle: You know what? I don't know what we are. We kiss and then we never talk about it. We nearly die frozen in each others arms, but we never talk about it. So no, I got no clue what we are. I know I don't want to see you throw your life away.