“But there is a great difficulty that I have mentioned only indirectly up till now. This is that every personification of the unconscious—the shadow, the anima, the animus, and the Self—has both a light and a dark aspect. We saw before that the shadow may be base or evil, an instinctive drive that one ought to overcome. It may, however, be an impulse toward growth that one should cultivate and follow. In the same way the anima and animus have dual aspects: They can bring life-giving development and creativeness to the personality, or they can cause petrification and physical death. And even the Self, the all-embracing symbol of the unconscious, has an ambivalent effect, as for instance in the Eskimo tale (this page), when the “little woman” offered to save the heroine from the Moon Spirit but actually turned her into a spider.”