Do not ask: Unde malum? but: Unde malum atque bonum?
There is no good reason to assume that the world is good and then ask how evil came to it. The greater mytery is whence our concepts of good and evil came from. One simply explanation is evolutionary: one day, someone came up with the word “good” and said to her friend, pointing at a berry: “good!” and pointing at another, poisonous one: “bad!”. Humans suddenly had a means of structuring their social interactions, of getting one another to do things by talking to them. The invention of the words “good” and “bad” or “evil” was a revolution, like the invention of agriculture or electric power.
