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

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

Where I come from, it's rude to point a gun at a man.

Rick Castle

Castle: You're not alone in this. I'm here.
Beckett: I know.

It is what it is.

Ryan

Don't listen to those haters.

Esposito

Spoiler alert.

Hurts like these take time to heal.

She took my coffee, Castle!

Beckett

Science fiction is not science.

Misgivings? Katherine, that was the farthest thing from his mind. He couldn't wait to be married to you.

Martha

I was featured in the NYPD calendar.

Esposito
From, "Don't ruin my story with your logic" to "We want the happy ending, we can't give up." Check out all of the great Castle quotes right here at TV Fanatic.

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.