More on Theology:

   On Demons - Nobody has been able to discover any "Underworld" of Dirt,
not in any formal sense.  If there is one, it isn't advertising its
presence much.
   So what's the deal with these "demon" thingies?  Where are they coming
from?  Why do they like it here so much?  Why are they always so evil?
   Any wizard will tell you that the answer lies in the WSOGMM, the Whole
Sort Of General Mish-Mash that underlies all of creation.  What he means
by this is that he doesn't have a clue; and if you get down to it, the
reason for just about everything lies in the WSOGMM, so he figures he
can't be too far off.  And, in fact, he isn't.
   The way it works is this.  There are a whole bunch of planes in the
WSOGMM - parallel realities, if you will.

 Some of them are happy places with lots of resources and stuff and joyful
people who shouldn't have a care in the world, except they always do
anyway, because that's people for you.  
 Some are old magical places with lots of mighty artifacts and powerful
magicians and great plans and much talk of smiting, but very little
smiting actually gets done in those places, because you don't get to be a
million years old by jumping into the middle of any battle that comes
along.
 Some are comparatively boring places with not a whole lot of magic where
no single person can gather enough power to do anything worth getting
everyone else excited about, and this is approximately the category that
Dirt falls into. 
 Some, though, are nasty unpleasant places that have lots of magic of the
killing-anyone-that-gets-close-to-it variety, and anyone living there has
to be very tough to survive.  Beings from these last types of plane are
usually very very keen on being anywhere but in those types of plane, so
they try to learn to plane-travel as quickly as possible.
 Sometimes, a few of the latter type of beings will find themselves in one
of the other types of planes.  This makes them very, very happy, because
there's lots of magic and food and stuff in other planes, with hardly
anything guarding it compared to what they're used to.  These types of
beings are called "demons", particularly by the people that used to have
the magic and food and stuff before they (the demons) showed up.  Demons
come from a great many different places, and there's no single reliable
method for dealing with them, although the people of Dirt have put a great
deal of effort into searching for one.

   As for the opposite end of the spectrum, the "Gods" of Dirt: If they,
or he, does, or do, exist, they have not seen fit to introduce themselves
to creatures whose life span, let's be honest, isn't much more than that
of the average mayfly.  If you're immortal, omniscient, and almighty,
there's not a whole lot more to get, is there?  Thus there are no
"clerics" in the traditional sense.
   Much more interesting are the passing, reasonably-mighty, and extremely
mortal planeswalkers, such as Serra the Benevolent, Teferi, Hamstur the
Unbearable, and The Lady.  While most of them shun contact with the
denizens ot this realm, many are happy to recruit their equivalent of
worshippers - that is, people who, in exchange for a fraction of their
power, agree to do their bidding, report the state of the world, and
generally form an extremely expendable first line of defense against
anything other planeswalkers might choose to send against them.  Most of
these have societies, with rigid social structures in which priests and
clerics can advance in "levels", thus gaining a greater share of their
patron's power, only after proving themselves in combat by defeating
random monsters and/or retrieving magical items.  More information on
clericry can be found in CLERIC1.TXT.