Hillman is describing a process that culture has systematically tried to prevent. Every institutional framework for managing the psyche — therapeutic, religious, philosophical — is organized around what he calls "positivities": the known good, the named virtue, the reliable meaning. Black attacks these not as punishment but as condition. Before anything actually shifts in the soul, something it was leaning on has to become unreliable.

What makes this difficult to receive is that the pneumatic logic runs so deep. The implicit promise underlying most self-development — that understanding accumulates, that meaning clarifies, that the work leads somewhere visible — is precisely what the nigredo refuses. Knowledge clouded is not a failure of method; death-as-good is not a therapeutic error to be corrected. The dissolving is the movement. There is no path around the black that does not simply postpone it.

The "opus contra naturam" phrase is worth staying with. Alchemy names this the work against nature not because it is unnatural but because it runs against the soul's preference for the given, the palpable, the already-colored world. What the nigredo produces — marks and traces, absences where presences were — is not the endpoint. But there is no endpoint that does not pass through this subtraction first. Hillman is not recommending despair; he is noting that change has an entrance, and that entrance faces away from the light.