Alchemical Self as unus mundus

The alchemical phenomenology of the Self culminates, in Jung’s late reading, in the figure of the unus mundus — the one world in which the opposites that structure psychic life are reconciled at their ground. Von Franz, closing the arc, reads the endpoint of the alchemical work as “the Jungian of the individual with this unus mundus in the mind of God” (von Franz 1975), drawing the formulation from Gerhard Dorn, the Paracelsian commentator whose tripartite unio mentalis / unio corporalis / unio mundi provided Jung with the decisive schema of Mysterium Coniunctionis.

Von Franz carefully distinguishes Jung’s unus mundus from Neumann’s Einheitswirklichkeit: “Neumann means the fusion of the individual with his environment… while Jung means an irrepresentable ‘potential’ background to the world” (von Franz 1975). The Self at this level is not a psychological state achieved by the ego but a structure of reality itself, to which the individuating psyche is assimilated only indirectly, through its symbols. The alchemical symbols — the lapis-philosophorum, the filius philosophorum, the rebis — are the figures by which this irrepresentable ground permits itself to be approached.

Jung in Mysterium Coniunctionis grounds the symbol-level claim: “sulphur as the arcane substance was set on a par with Christ, so that for the alchemists it must have meant something very similar” (Jung 1955). The coniunctio of Sol and Luna, sulphur and mercury, Christ and the wounded physician, is at once the alchemical opus and the phenomenology of the Self. The alchemical Self is therefore not a metaphor for the psychological Self — it is the same structure read through the image-language of matter.

Sources

• carl-jung: Mysterium Coniunctionis on sulphur-Christ parallel (1955)
• marie-louise-von-franz: C.G. Jung: His Myth in Our Time on unus mundus from Dorn (1975)
• gerhard-dorn: unio mentalis / corporalis / mundi as source schema