Archetypes, in spite of their conservative nature, are not static but in a continuous dramatic flux. Thus the self as a monad or continuous unit would be dead. But it lives inasmuch as it splits and unites again. There is no energy without opposites!
Carl JungThe darkness which clings to every personality is the door into the unconscious and the gateway of dreams, from which those two twilight figures, the shadow and the anima, step into our nightly visions or, remaining invisible, take possession of our ego-consciousness.
Carl Jung