I don’t know who he is but I know what he is, a giant ass.

Alexis

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.

On the bright side, at least I'm not crazy.

Rick Castle

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

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

I was in Thailand getting shot at with Chuck Norris?

Rick Castle

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 think we may have just dug our own graves.

Rick Castle

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

Oh, absolutely not! You will not and do you know why? Because you're a fighter. What have you always told me? No one will give you anything in this life. You must earn it and look at you. Almost 20 years later and you're back on Broadway. You have earned this.

Rick Castle

To bravery, to commitment, to love, to sacrifice.

Ryan