Full Idea
Monotheism explains order but not evil, and dualist religion explains evil but not order. One logical solution is a single omnipotent God who created the universe, and is evil - but nobody in history has had much stomach for that belief.
Gist of Idea
In order to explain both order and evil, a single evil creator is best, but no one favours that
Source
Yuval Noah Harari (Sapiens: brief history of humankind [2014], 12 'Battle')
Book Reference
Harari,Yuval Noah: 'Sapiens: a brief history of Humankind' [Vintage 2014], p.246
A Reaction
Eh? Is there not also good, which also needs explaining? And there is some chaos to be explained too. Hume offers the best explanations. An inexperienced god, a team of squabbling gods, a god with shifting moods…. Study the facts first.