How does this sound: Goodness arises from enlightened, which is to say intelligent and perceptive, self interest. Evil arises from an unconscious selflessness, from a nullity.
Goodness is a 1; it is plenary.
Evil is a 0; it is empty.
Goodness arises from extending and expanding what we consider to be our selves, but never asks you to be miserable indefinitely to no purpose. Feeling good–feeling positive feelings–is the aim.
Evil arises from misery. Pain wants pain. Misery wants company. And if it is natural for us to feel good feelings, then evil is unnatural. It is a fullness of pain, and an emptiness of pleasure.
And of course happy, honest people make unhappy, dishonest people miserable. They come to hate them, and this motivation has consequences, not least of which is the abhorrence of “normality”, even if that normality is actually healthy; even if that normality includes true love, laughter, purpose and sense of place. Such people torture the miserable with hope, and ridding the world of hope comes to seem the most hopeful possible act.
Goodness is selfish, and evil gives no thought of the self at all. It is split off from an honest sense of the self, and what to do with it. Evil is a broken mirror.
Shunyata is fullness, and that which is truly empty is filled only with illusions.
I’m chasing something I’m not quite catching, I don’t think. If this doesn’t work for you go clap one hand for a while.