Alan Dean Foster’s novelization for The Force Awakens begins with an excerpt from the Journal of the Whills, which predicts that the cycle of light and dark will be settled by:
“The resolving of grey
Through refined Jedi sight.”
The common interpretation (regardless of whether Foster had any insight into a grand sequel trilogy plan, which is doubtful, given no such plan existed) is that the trilogy is taking us into an era where the good-evil binary of the Force becomes more complicated and “grey”, and a new solution to the conflict must be found. But read the poem again. “Resolving” grey does not mean grey is the answer – it means grey is the problem which must be resolved. A closer reading of the sequel trilogy reveals that it may be the clearest portrayal of the battle between good and evil in all of Star Wars.