Castle: She's proud of you. Wherever she is. She's proud.
Beckett: I never could have done this without you.

Castle: Guys, she wouldn't want you involved.
Esposito: We're already involved. We're family, bro.

Beckett: I love you.
Castle: Yeah, well you better. It's two weeks to the wedding and it's too late to return the tux.

Now just take your turn and feel the bitter sting of defeat.

Beckett: Castle, aren't there more important things than winning?
Castle: Oh, that's a notion created to comfort those who lose.

Beckett: I think catching killers is pretty extreme and then there's marrying you.
Castle: Ah yes, I admit I am extreme. Extremely handsome.
Beckett: With a high degree of difficulty.

Richard Castle, one word short. I cannot allow this to be my epitaph.

Alexis: Halter tops were big in the '70s.
Castle: So were those peasant blouses. Why didn't you wear one of those?

We will solve the greatest mystery of the disco era, besides the popularity of disco itself.

Beckett: I look ridiculous.
Castle: Ridiculously hot.

By the power vested in me by the NYPD I will personally arrange for you to see the deceased.

Harold: Have you ever seen a cop with an ass that fine. If this women's lib I'm all for it.
Castle: To be fair, you do have a very fine, never mind.

Castle Quotes

Beckett: (Clears throat) Ahem. What's the deal with men and boobs, anyway?
Castle: Biological. We can't help it.
Beckett: But doesn't it bother you that they're so obviously not real?
Castle: (Pauses) Santa's not real. We still love opening his presents.

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

Castle