There's also plenty of examples in the bible and in catholic writings, such as the arc of the covenant, which contain the ten commandments, write by the hand of god himself, whose power is so enormous and incomprehensible that merely touching it can kill a man, and seraphims who cover themselves with 2 of their 3 pair of wings, apparently because their form is beyond human understanding that merely gazing at it would mean ruin, and they are described as the creatures most similar to god.
Well, the Ark of the Covenant is more of a Jewish thing- kinda like their version of the Holy Grail. And the idea of [/url=http://en.wikipedia.org/wiki/Sacred_mysteries]sacred mysteries[/url] is a pretty common theme in Judeo-Christian and ancient Greek traditions. Depending on your particular faith and the mystery in question, the answer to a sacred mystery is either something you get after going through the initiation (especially common in Greek/Roman cults, and early Christianity) or is a way of describing one of the great mysteries of Life, the answer to which is unknowable unless God tells you.
To quote that article, "The word mysterion (μυστήριον) is used 27 times in the New Testament. It denotes not so much the meaning of the modern English term mystery, but rather something that is mystical. In the biblical Greek, the term refers to "that which, being outside the unassisted natural apprehension, can be made known only by divine revelation.""
As far as all this relates to DF, we know that there are certain ineffable secrets about the nature of the world that demons/gods can spell out to whatever vessel they choose. We know that they can do certain crazy things like allow the raising of the dead, which implies that less profound things are certainly within reach.
Will secrets make an appearance in dwarf mode any time soon?Lets say that a demon relates a secret to a man in world gen. That man writes it down on his fancy stone tablet. A megabeast then steals that tablet and takes it back to his lair. World gen ends, and the player embarks with their dwarves on that lair. Will the tablet be there for the dwarves to find? When can we expect some kind of meaningful interaction with that kind of world-gen artifact?
Do you foresee secrets playing a role in the formation/abilities/motives of cults in world-gen?Obviously the Lovecraftian mythos is big on the "learn secret of the Old Ones, go mad from the revelation, work to summon them so they can kill us all and end our miserable insignificant existences" kind of cult, but I for one would like to find cults based on secrets learned from other spheres. Glancing at
the list, I can imagine some kind god giving a mortal the secret of Happiness at which point he goes spreading it around, causing all kinds of shenanigans. And some of the weird ones could be quite entertaining- having to foil the machinations of the Cult of Muck as an adventurer could be all kinds of amusing, not to mention baffling once you make it to the head of the cult and he whips out whatever secret is associated with that sphere.