Studying Castiel...
meret posted a link to information about Castiel, more than I have been able to find in my own angel reference books. Can't see any sources on this site, though - references or footnotes - how'd they get the information? Arcane old books like those owned by Bobby or Giles? New Age studies? Channelling?
In any case, intersting bits: "The angel... can help us if there are changes in our lives which may involve a lot of travelling." Considering that Sam and Dean spend their lives travelling from place to place - !
Passion? Understanding? Yes! I'm there.
I like the note that it's "important to listen to the Angels who want to protect us". Listen to Castiel, Dean!