imagery fell into patterns, that these patterns were reminiscent of myth, legend and fairytale, and that the imaginal material did not originate in perceptions, memory or conscious experience. The images seemed to Jung to reflect universal human modes of experience and behaviour.
Samuels reconstructs the historical origin of archetypal theory in Jung’s observation that spontaneous imagery recapitulates universal mythic patterns independent of personal experience.
, Jung and the Post-Jungians, 1985thesis