Fate vs. Choice
Most prominent in No Country for Old Men, the seperation of Fate vs. Choice is ever present, the argument always seems to be wether fate caused everything to happen or wether it was solely choice of taking an action.
Carla Jean and Anton Shugar are excellent examples of the opposites of the spectrum, Anton believes in fate causing everything to happen as it should while Carla Jean on the other hand, believes strongly that choice must be made for an action to take place.
In Raising Arizona, Edwina's inability to bear children could be argued as fate, which sent her to steal the kid, or wether it was purely the choice to do so as to why they stole the kid.