Sourcing Villainy for your Villains (The Problem of Evil)

"One of the most important things that an author should know in order to write good and even great stories, readers and future writers, is that evil in fact exists."

Two Proposals: Courtesy of TWHHAK (Things We Have Heard And Known)

It isn't politically correct, but if true, these proposals will be validated for all male and female human characters, respectively, and resonate with the disproportionately human Reading Public. H/T to Cane Caldo.