All systems, go......................................

      Finally, all systems of theological interpretation, plain or fancy, rot out at an alarming rate.  Unlike the house of faith, they are exposed to the wind and weather of prevailing opinion.  Even if a theologian never once doubts anything about his system, it remains endlessly vulnerable to scorn, ridicule, or just plain disinterest from the outside.  The sheer labor of keeping up with the repairs necessitated by such forces has kept more theologians than one from ever spending as much as a single night under a snug roof.

-Robert Farrar Capon,  The Parables of Grace