With four separate plots and four sets of characters, A Midsummer Night's Dream risks fragmentation. Yet Shakespeare has managed to create a unified play through repetition of common themes — such as love — and through cohesive use of imagery. Shining throughout the play, the moon is one of the primary vehicles of unity. In her inconstancy, the moon is an apt figure of the ever-changing, varied modes of love represented in the drama. As an image, the moon lights the way for all four groups of characters.
The play opens with Theseus and Hippolyta planning their wedding festivities under a moon slowly changing into her new phase — too slowly for Theseus. Like a dowager preventing him from gaining his fortune, the old moon is a crone who keeps Theseus from the bounty of his wedding day. Theseus implicitly invokes Hecate, the moon in her dark phase, the ruler of the Underworld associated with magic, mysticism, even death. This dark aspect of the moon will guide the lovers as they venture outside of the safe boundaries of Athens and into the dangerous, unpredictable world of the forest.
In this same scene, Hippolyta invokes a very different phase of the moon. Rather than the dark moon mourned by Theseus, Hippolyta imagines the moon moving quickly into her new phase, like a silver bow, bent in heaven. From stepmother, the moon is transformed in the course of a few lines into the image of fruitful union contained in the "silver bow," an implicit reference also to Cupid's arrow, which draws lovers together. Utilizing the imagery of the silver bow, Hippolyta invokes Diana, the virgin huntress who is the guardian spirit of the adolescent moon. In this guise, the moon is the patroness of all young lovers, fresh and innocent, just beginning their journey through life. This new, slender moon, though, won't last; instead, like life itself, she will move into her full maturity, into a ripe, fertile state, just as the marriages of the young lovers will grow, eventually resulting in children.
