Remember, darkness does not always equate to evil, just as light does not always bring good.
P. C. CastIts more than a simple belief that there is good and that it should fight the evil in the world. It's a personification of Light and Darkness at their most elemental level, as forces that are so absorbed with themselves that one cannot exist without the other though they constantly try to consume one another. One of the earliest repersentations of Light and Darkness was of Light being a massive black bull and Darkness being an enormous white bull.
P. C. CastBut we're going to smile and pretend we're fine with the dorky birthmas gifts because people do not get that they can't mush a birthday into christmas.
P. C. Cast