The Glade 4.0

I'm under the assumption that the Song of Ice and Fire that's referred to in the books in various places is in reference to the struggle between R'hllor and the unnamed diety of darkness whose struggle R'hllorian adherents claim is responsible for the odd seasonal back and forth between winter and summer.

I make this inference because Martin's public statements about the seasons have strongly inferred that their irregular nature is grounded in a magical/theological explanation rather than a cosmological one. The only theology I'm aware of within the novels to hold a similar view are the priests of R'hllor. Notably, they also seem to be the ones mixed up in the vast majority of the actual magic in the world, so this tends to lead credence to their assertions, for me (much as I despise Melisandre).

Stannis being lead up to the Wall implies to me that the Others are some aspect of the work of the unnamed oppositional diety. I'm not sold yet on whether this diety is inherently evil, though; I would *love* to see it turn out to be a nature-y god of the wilds and natural order (pitted against R'hllor as a god of civilization and social order), and to find out that the Old Gods are another avenue of worship to such a natural god.

It's probably too much to hope for, but I like that notion because it neatly ties up the bulk of the remainder of the legitimate magic we see in the Children of the Forest, the Green Sight, wights, and wargs. The only thing my theory doesn't encompass are the warlocks Danaerys kills in Qarth.