A woman I was treating had, at a critical moment, a dream in which she was given a golden scarab. While she was telling me this dream I sat with my back to the closed window. Suddenly I heard a noise behind me, like a gentle tapping.
Jung’s paradigm case: the simultaneous appearance of a scarabaeid beetle at the window and the patient’s dream of a golden scarab constitutes the definitive clinical illustration of synchronicity.
, The Structure and Dynamics of the Psyche, 1960thesis