Beckett, I think your crime scene's making a run for it.

Martha: I told you, if you can't tell your mother what you're doing you should not be doing it.
Castle: Yes, when I was eight.

Castle: The fact that you even think that breaks my heart. I would walk into a tornado for you, Kate.
Beckett: And I would die if I lost you.

You know when I hung up my shingle as a P.I., I knew I'd have to follow some wives, I just never thought it would be my own.

Castle: Kate, I have never given up hope, not since the day we met and that will never change until you tell me it should.
Beckett: Then don't change, ever.

No relationship can survive secrets or lies.

Castle: They've been through way too much together to give up on what they have.
Beckett: You're a wise man Castle, with a big heart and you're rather good looking too.
Castle: You might want to pace yourself with the flattery. You've got a whole dinner to get through.

Martha: Is that the old friend who almost got you killed a few years ago?
Castle: Yeah, like six times.

This separation thing is getting really old.

Martha: Off, Off Broadway.
Richard: Mother, that was New Jersey.
Martha: Off, Off Broadway, as I said.

Here I am. Roguishly handsome and at your service. What do you need?

So if by ingratiate myself you mean dazzle her with my Sherlockian genius then yes, that's exactly what I mean.

Castle Quotes

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

Castle

Castle: How do you know when you're in love?
Beckett: All the songs make sense.