Supernatural (TV Series)

The Monster at the End of This Book (2009)

Misha Collins: Castiel

Quotes 

• Castiel : You must understand why I can't intercede. Prophets are very special, they're protected.

  Dean Winchester : I get that.

  Castiel : If anything threatens a prophet, anything at all, an archangel will appear to destroy that threat. Archangels are fierce, they're absolute, they're heaven's most terrifying weapon.

  Dean Winchester : And these archangels, they're tied to prophets?

  Castiel : Yes.

  Dean Winchester : So if a prophet was in the same room as a demon...?

  Castiel : Then the most fearsome wrath of heaven would rain down on that demon.

  [giving a knowing look] 

  Castiel : Just so you understand why I can't help.

  Dean Winchester : Thanks, Cas.

  Castiel : Good luck.

• Dean Winchester : [about Chuck being a prophet]  Him? Really?

  Castiel : You should've seen Luke.

• Castiel : Dean, let him go! This man is to be protected.

  Dean Winchester : Why?

  Castiel : He is a prophet of the Lord.