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

Be honest, when you vowed for better or for worse you really had no idea what you were agreeing to, did you?

Castle: A crime scene at a fire. I've never done one of these before.
Ryan: After this you might not want to.

Ladies, I am not a stripper, though I can understand how you'd make that mistake.

People always say they wanna die in their sleep.

Martha: Off, Off Broadway.
Richard: Mother, that was New Jersey.
Martha: Off, Off Broadway, as I said.

You're powerless to resist me, you always have been.

Don't leave me, please. Stay with me. Ok. Kate, I love you. I Love you Kate.

Beckett: Castle, wait.
Castle: I did three months.
Beckett: I know you're angry
Castle: You're damn right I'm angry. I watched you die in that ambulance you know that? Do you know what that's like? to watch the life drain out of someone you care about?

It's the Bachelor meets Homeland.

Beckett: You had a lot of imaginary friends growing up, didn't you?
Castle: Still do.

Hope is just another way to say we're back to square one.

Castle Quotes

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

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

Castle