the two halves are felt to be antithetical and thus the expression of an endopsychic antithesis. The antithesis can be formulated as the masculine ego versus the feminine ‘other,’ i.e., conscious versus unconscious personified as anima.
Jung grounds social and tribal duality directly in an endopsychic antithesis between conscious and unconscious, arguing that the moiety divisions of archaic societies are projections of this primary psychic split.
, The Practice of Psychotherapy: Essays on the Psychology of the Transference and Other Subjects, 1954thesis