There are two reasons why man loses contact with the regulating center of his soul. One of them is that some single instinctive drive or emotional image can carry him into a one-sidedness that makes him lose his balance...his one-sidedness and consequent loss of balance are much dreaded by primitives, who call it 'loss of soul.' Another threat...circles around particular complexes
Carl JungHow else could it have occurred to man to divide the cosmos, on the analogy of day and night, summer and winter, into a bright day-world and a dark night-world peopled with fabulous monsters, unless he had the prototype of such a division in himself, in the polarity between the conscious and the invisible and unknowable unconscious?
Carl Jung