Non est ergo malum nisi privatio boni. Ac per hoc nusquam est nisi in re aliqua bona. … bona sine malis esse possunt, sicut ipse Deus
This Augustinian passage, cited by Jung in Aion, deploys esse as the ontological ground of the privatio boni argument: evil has no independent being, existing only as the diminishment of what genuinely is good.
, Aion: Researches into the Phenomenology of the Self, 1951thesis