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.

Back stabbing, adultery and betrayal. That is why I hate politics.

Rick Castle: I know I have occasionally theorized that a conspiracy was afoot.
Kate Beckett: Occasionally?

Kate Beckett: You texted Castle and not me?
Kevin Ryan: Well, when you have a crazy theory you don't call the voice of reason.

It happened on his watch so for Ryan it means it's all on him until he finds this guy.

Rick Castle: Checking you for bites and scratches. Just making sure you didn’t somehow get impregnated.
Kate Beckett: If you think that’s how I’d get pregnant we need to talk.

Kate Beckett: Wait, you signed up to go to Mars. When?
Rick Castle: A couple years ago.
Kate Beckett: Where was I?
Rick Castle: We were fighting.

Kate Beckett: Four adults together in one space, we're bound to step on each other's toes.
Rick Castle: Yeah, well there were a lot more toes than usual tonight.

Castle we have a murder. To solve not to commit.

Kate Beckett: Thanks for coming to get me.
Rick Castle: Always.

Castle Quotes

I need time to stop being mad and you need time to figure out a way to be OK with this.

Alexis

I tried to stay in the car I really did.

Castle