Fear and how that manifests into greed, violence, jealousy, and oppression.
Scarcity. This results in hunger of all sorts. Which results in greed, war, and diminishing brotherly love.
Origin of evil is thinking of self always and not caring for others.
A deficiency or lack of mirror neurons. When people see other people as objects, they feel free to abuse them as they see fit.
Evil is a necessity required for the good to be noticed and appreciated as a contrary, for the good thrives by fighting the evil.
Creative energy driven by fear, greed, selfishness, and myopic, short-term thinking.