Complexes are psychic contents which are outside the control of the conscious mind. They have been split off from consciousness and lead a separate existence in the unconscious, being at all times ready to hinder or to reinforce the conscious intentions.
Carl JungThe collective unconscious appears to consist of mythological motifs or primordial images, for which reason the myths of all nations are its real exponents. In fact the whole of mythology could be taken as a sort of projection of the collective unconscious. We can see this most clearly if we look at the heavenly constellations, whose originally chaotic forms are organized through the projection of images. This explains the influence of the stars as asserted by astrologers. These influences are nothing but unconscious instrospective perceptions of the collective unconscious.
Carl Jung