Sol and Luna: The naked truth. Woodcut 3 of the Rosarium Philisophurum, 1550 edition: courtesy of the Alchemical Website.

from Jung's "Psychology of the Transference", 1946 (Jung, 1998:194-6)

"The chaste disguises have fallen away. Man and woman confront one another in unabashed naturalness. Sol says, ‘O Luna, let me be thy husband,’ and Luna, ‘O Sol, I must submit to thee.’
Psychologically, we can say that the situation has thrown off the conventional husk and developed into a stark encounter with reality, with no false veils or adornments of any kind. Man stands forth as he really is and shows what was hidden under the mask of conventional adaptation: the shadow. This is now raised to consciousness and integrated with the ego, which means a move in the direction of wholeness... Recognition of the shadow is reason enough for humility, for genuine fear of the abysmal depths in man... The advantage of the situation, despite all its dangers, is that once the naked truth has been revealed the discussion can get down to essentials; ego and shadow are no longer divided but are brought together in an - admittedly precarious - unity." C.G. Jung