Castle:We could always have coffee together, you know debrief each other
Beckett:Why Castle so I can be another one of your conquests?
Castle:or I could be one of yours.
Beckett:It was nice to have met you Castle.
Castle:To bad it would have been great.
Beckett:You have no idea.

Ryan: You're shirts really tight, did you change it?
Esposito: I spilled something.

I don't know what to do about my life.

Kate

Caught him red handed and bare bottomed.

Rick Castle

Beckett: You've got quite a record, Mr. Knox.
Castle: Your parents must be proud.
Knox: Yeah, they hang all my mug shots on the fridge.

My loft is overrun with red heads.

Man, I hate walls of crazy.

Ryan

She's Snow White!

Beckett

Beckett: Why is it so important to you that I believe all this stuff about fates, psychics, and Santa Claus?
Castle: Because, if you don't even believe in the possibility of magic, you will never ever find it.

Dr. Parish: Looks like a patient lost his patience.
Castle: Also his command of grammar. You're should be you-'-re as in you are, that's not even a tough one not like when to use who or whom.
Beckett: Do you really think that's the take away here Castle?
Castle: I'm just saying whoever killed her also murdered the English language.

Esposito: Alright, hurry up. Let's just get this over with.
Sonia: Didn't I used to say that to you whenever you got frisky at night?

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.

Castle Quotes

Sometimes the hardest things in life are the things most worth doing.

Castle

Castle: How do you know when you're in love?
Beckett: All the songs make sense.