“My father and his father before him were both Men of Letters, as John and you two should have been. We’re preceptors, beholders, chroniclers of all that which man does not understand. We share our findings with a few trusted hunters – the very elite. They do the rest.”
The symbol used by the Man of Letters in Supernatural, this one
is called a unicrucal hexagram and resemble the symbol used by the religion Thelema
And the founder’s name is .. Aleister Crowley. Also the religions code is “Do what thou wilt shall be the whole of the Law”. In other words Free Will. (x) I don’t know if this is a coincidence, but if it is - it’s a good one.