Just because you're smart and beautiful doesn't mean you have good judgement.

Relationships aren't math problems. You don't solve them by being practical.

Castle: What was your talent?
Martha: The way I wore a sweater.

How come I didn't hear about this on TMZ?

Death of a beauty queen. Scandalous.

I should never leave. We can be the father daughter version of Grey Gardens.

Alexis

Putting the job ahead of your heart is a mistake.

Mike Royce

Let's go home Castle.

Beckett

Poke you? I want to kiss you!

Beckett

You know what I thought when I first met you? You were a mystery I was never going to solve.

Castle: This is so weird, I dressed up as him for Halloween.
Beckett: I did too.

Castle: Worried you can't control yourself when we're alone?
Beckett: It's not me that I'm worried about.

Castle Season 3 Quotes

He really is ruggedly handsome.

Ryan (looking at cutout of Castle)

Ryan: (drops egg off desk)
Beckett: Are you guys reenacting the "Humpty Dumpty crime scene?"