Never mind the details?
This means that the abstract universal, the nature of evil, can never be known but can only be inferred.
When I see a chair, to me it is a chair. Although at first it is a chair because I recognize it as such, one can argue if it is a chair. To an ant for example it probebly is not a chair. To an alien it could be something we can’t imagine. Even if the chair looks and feels real, at some scientists will say that the chair could be non existing.
Now the nature of evil: in an encounter with bad outcome with a covert narcissist, I got a strong impression of the devil.
That devil looked as real to me as the chair I spoke of.
Therefore I think that the nature of the chair is as good or as bad to know as the nature of evil.
That, to me, makes the nature of evil a detail as well as the chair is.
The abstraction of what goes above this is what puzzels me…..