I'm proud to have been his inspiration and I am proud to be his wife.

He has proven to be a brilliant partner and he's always had my back.

Listen, if after seven years of your crazy theories you haven't already been committed then I think you're pretty safe.

I don’t cross the line. I put myself on it.

Kate Beckett: I got here as soon as I could.
Rick Castle: Never soon enough.

Kate Beckett: LT is going to drive you home.
Rick Castle: And if I refuse?
Kate Beckett: Then he'll drive you home in handcuffs.
Rick Castle: Just for the record, extremely bitter.

I'll be with him no matter wherever this leads and I promise you I'm not going to let him go too far.

Kate Beckett: But Castle, why would you be abducted on our wedding day and end up in Thailand?
Rick Castle: Worst bachelor party ever?

You do know I'm a doctor, not a puppeteer.

Lanie

I don't want to let him down. He wants this so badly and I want to give it to him but I just, I don't know that I can.

Kate Beckett: I mean, there's a reason why Capt. Gates doesn't get up on the stage and have fun.
Rick Castle: I just always assumed it was because she was genetically incapable of it.

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.

Castle Quotes

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

Beckett

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.