While I do love kissing you Beckett, it's just a little creepy when you do it in front of a dead body. It's inappropriate.

I didn't open this place to make money. I opened it for the exciting cases.

Alexis: I can't leave you alone for five minutes.
Castle: Does this mean no hug?

I am so sick of people pushing me away for my safety.

Castle: This novel writes itself.
Ryan: Then tell us what happens next.
Castle: I have no idea. That's what makes it so good.

You know Beckett asked for some time so I'm just giving it to her every day. Sometime twice.

This is why I love the 12th precinct. You guys never let me down.

Marcus

Kate: Now Rick, be charming but not too charming.
Rick: That's like asking Superman not to be too super.

I believe her exact words were, “Sure, maybe we'll get lucky and Castle will get shot.”

Ryan

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

It's all come crashing down around my ears and I've got no one to blame but myself.

Beckett

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 Quotes

I don't get it. He's into you and your determined not to give into these feelings that you clearly have for him. So he fantasizes about you through his writing. It is literally verbal masturbation.

Natalie

I can't tell you how many times I've had dreams of being on this very ship.

Beckett