if you can stop him, and you can because it's your task to accomplish and that's the only thing I'm sure of, it will be because of the... the human you are.

I love this so, so much--I may be the only person in spn fandom who doesn't want Dean to drink Castiel's blood. I like how this is Castiel seeing the strength of who Dean is (as is), that he thinks this is the key. Also, wings, wheee!