This may sound stupid, but my friend called No Country For Old Men "Augustinian." As I look this up, I think it's less a narrative about order and chaos than a meditation on good, evil, and free will. Let me explain:
Maybe this is what my friend is getting at. Remember how frustrated Chigurh gets when the wife tells him not to toss the coin, and that he has a choice to kill her or not to kill her. That he has free will. He gets flustered, angry. He's not evil in his own head; it's fate that determines somebody's living or dying. It's chance. Her pointing out that he has free will is the only time in the movie that he reflects or gets angry. I'm a dilettante, but I thought of him during this thread. So....here goes.
From Augustine on evil.
Augustine observed that evil could not be chosen because there is no evil
thing to choose. One can only turn away from the good, that is from a greater good to a lesser good (in Augustine's hierarchy) since all things are good. "For when the will abandons what is above itself, and turns to what is lower, it becomes evil--not because that is evil to which it turns, but because the turning itself is wicked."
[4]
Evil, then, is the
act itself of choosing the lesser good. To Augustine the source of evil is in the free will of persons: "And I strained to perceive what I now heard, that free-will was the cause of our doing ill."
[5] Evil was a "perversion of the will, turned aside from...God" to lesser things.
[6]
eta* This scene is on right now on IFC