But if dreams produce such essential compensations, why are they not understandable? I have often been asked this question. The answer must be that the dream is a natural occurrence, and that nature shows no inclination to offer her fruits gratis or according to human expectations. It is often objected that the compensation must be ineffective unless the dream is understood. This is not so certain, however, for many things can be effective without being understood. But there is no doubt that we can enhance its effect considerably by understanding the dream, and this is often necessary because the voice of the unconscious so easily goes unheard. "What nature leaves imperfect is perfected by the art," says an alchemical dictum.
— Carl Gustav Jung
Jung's appeal to the alchemical dictum is worth sitting with carefully, because it carries a trap inside its elegance. The claim that nature leaves things imperfect and art perfects them sounds like an invitation to interpretive work — and it is. But the prior sentence already conceded something that tends to get lost: compensation operates whether you understand it or not. The dream acts on the psyche before the ego arrives with its notebook.
This matters because the desire to understand dreams is rarely innocent. Interpretation promises control — a way of domesticating what came up from below, filing it, making it legible to daylight. The understanding that Jung actually recommends is something narrower and harder: not mastery of the image but enough permeability that the compensation can land where the ego is defended. The art the alchemists meant was not clever exegesis; it was a kind of sustained, receptive attention — what they called the *opus*, which proceeded by suffering the material as much as by thinking it.
So the question the passage leaves open is whether your desire to understand your dreams is in service of that permeability or in place of it. Comprehension can be its own wall.
Carl Gustav Jung·The Structure and Dynamics of the Psyche·1960