Von Franz is correcting a mistake that runs deep in how most readers encounter Jung — the tendency to treat an archetypal image as a noun, a fixed symbol to be looked up and identified. The Great Mother, the Trickster, the Shadow: named, catalogued, shelved. That cataloguing instinct is itself a psychic defense, a way of holding the archetype at arm's length by converting its force into information. What von Franz insists on instead is that an archetype is already in motion before you notice it. It arrives as impulse, not emblem — a directed ray that hits, and simultaneously as a field that reorganizes everything around it without asking permission.

The distinction matters especially when a dream or a symptom resists interpretation. Readers often bring a troubling image to depth work expecting it to mean something stable — something that, once decoded, will lose its grip. But if the archetype is a process, not a picture, then decoding is the wrong move entirely. The image is drawing other images into its orbit, reorganizing the energetic field of the psyche in ways that precede and outlast any single interpretation. The analyst's — or the reader's — real task is not to identify the archetype but to track its field: to ask what else has shifted, what has gone cold, what has suddenly become luminous, since the image appeared.