Risking our hearts is why we're alive. The last thing you want to do is look back on your life and wonder, if only.

Mike Royce

Captain Montgomery: Feds say he is a white male, 25 to 45 years old.
Castle: Could be me.
Captain Montgomery: With a dysfunctional relationship with his mother.
Castle: Still me.
Captain Montgomery: He has a menial unimportant job.
Beckett: Definitely you.
Castle: Just for that my next book is based on Esposito.

You get cute when you get angry. Not when you get angry with me.

Castle (to Beckett)

Castle: I am not saying I can speak with the dead, just that there are people in the world more sensitive than me.
Beckett: Now that's not hard to believe.
Castle: Walked right into that one.
Ryan: uh huh.

My partner's daughter is missing and you're in my way!

Beckett

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

You would make a terrible conjoined twin.

Castle (to Beckett)

I don't want to let fear win.

Alexis

That's like throwing gasoline on fireworks.

Esposito

My loft is overrun with red heads.

I'm going back to my hotel. I would invite you to come, but like I said, I don't steal things that belong to someone else.

Serena Kaye

What are you doing? That was a two hundred dollar phone!

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