Jung cited recurring themes as evidence of the existence of psychic elements shared among all humans. For example: "The snake-motif was certainly not an individual acquisition of the dreamer, for snake-dreams are very common even among city-dwellers who have probably never seen a real snake." Still better evidence, he felt, came when patients described complex images and narratives with obscure mythological parallels. Jung's leading example of this phenomenon was a paranoid-schizophrenic patient who could see the sun's dangling phallus, whose motion caused wind to blow on earth. Jung found a direct analogue of this idea in the "Mithras Liturgy", from the Greek Magical Papyri of Ancient Egypt—only just translated into German—which also discussed a phallic tube, hanging from the sun, and causing wind to blow on earth. He concluded that the patient's vision and the ancient Liturgy arose from the same source in the collective unconscious.