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C.G. Jung’s work unquestionably marked a breakthrough for psychoanalytic family therapy, where the concepts of its founder (A. Ruffiot) and those of Jung himself sometimes merged. Ruffiot’s concept of pure psyche can be compared with Jung’s concepts of synchronicity, collective subconscious, and archetype. Furthermore, this article raises the question of how necessary it is not to confine the subject—a family or a couple—to their symptom, but rather to open them up to the world and to a spiritual dimension that does not reduce psychoanalysis to a technique, but to a subtle art where materiality and the psyche cross paths. Quantum physics highlights close relations between the world and the individual, thereby contributing to modifying psychotherapeutic theories by taking synchronicities into account.