Castle: The killer can't be a ballet dancer because it'd just be such a huge let down.
Beckett: Of course, we can't let facts get in the way of a good story.

Castle: Our killer is a ninja.
Beckett: Or he is just an athletic person with a hooded track suit.

Castle: See what happens when I leave you alone.
Beckett: Babe, I wasn't alone. When they were interrogating me, the only thing that kept me going was thinking about you. About our future, the wedding. You were with me the whole time.

I need you to know that our partnership, our relationship is the greatest thing that has ever happened to me. You are an amazing man and I love you with all of my heart. Always.

Capt. Fowler if you can hear me this is seriously interfering with my dinner plans.

Because it's clear to me that what we both need is a really good font.

If I have to hear that confession one more time, I'm going to shoot somebody.

Dwight: I need to confess.
Beckett: Yeah, take a number.

Castle: You should know it, you're engaged to a genius.
Beckett: Yes, a genius at annoying me.

I think we all just kickstarted our day.

Castle: Do I smell coffee?
Beckett: If you do, it was made by elves.

Castle: To the things we missed.
Beckett: And to those we didn't.

Castle Quotes

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

Castle

The moment we met my life became extraordinary. You taught me more about myself than I knew there was to learn. You are the joy in my heart. You are the last person I want to see every night before I close my eyes. I love you Katherine Beckett and the mystery of you is the one I want to spend the rest of my life exploring. I promise to love you, to be your friend and your partner in crime and life till death do us part and for the time of our lives.

Rick Castle