Jung borrows from the alchemists here, and the borrowing matters: *anima media natura*, the middle nature, names a substance that belongs fully to neither spirit nor body and therefore cannot be reached by ascending toward one at the expense of the other. What the passage refuses is the private inward journey as sufficient — the self alone in its interiority, cultivating depth, becoming whole. That project, however earnestly undertaken, mistakes the half for the whole. The soul is relational by constitution, not by preference or therapeutic recommendation.

The harder implication sits in the phrase "always found in a 'You.'" Not sometimes, not ideally — always. Which means every strategy for achieving wholeness that moves away from genuine encounter with another person is working against the grain of what the psyche actually is. The longing to be complete through spirit, through inner development, through transcendence of the relational mess — each of these is a real movement, and each is not wrong exactly, but it is incomplete in the precise sense Jung means: structurally, constitutionally, unable to deliver what it promises. The soul requires the friction, the opacity, the genuine otherness of another. The *You* is not an obstacle to inner work; it is the condition under which the *anima media natura* becomes whole at all.