The contrast Kerényi draws is not decorative. Helios and Hades are not simply opposites the way light and dark are opposites in a physics textbook — they are two modes of disclosure, and the one we prefer tells us something about the soul's direction. Helios makes things present, locatable, available to the gaze. What Hades does is subtler: he does not destroy visibility, he withdraws the thing from it. The shade in the underworld is not annihilated; it becomes imperceptible to the eyes that scan the surface.

Depth psychology, in its most honest register, is Haidic work — not because it traffics in death, but because it takes seriously what has become invisible precisely because the light fell elsewhere. The soul does not hide its contents arbitrarily. What has gone underground has usually gone because the pneumatic pressure of ordinary life — the demand to be present, legible, functional, illuminated — could not accommodate it. Hades gives those contents a place to be without being seen. The therapeutic error is to immediately drag them back into Helios, to insist on clarity, integration, resolution. Sometimes the more honest move is to learn to perceive in the dark — to develop, as Kerényi's etymology quietly implies, a capacity for the invisible that Helios, by definition, cannot offer.