What metaphors are used in The Sound of a Voice by David Henry Hwang?

David Henry Hwang's, The Sound of a Voice, is a tragic tale told through the mythic metaphors of Japanese literature. In this play Hwang attempts to explore some of the deepest, and often contradictory, human emotions. He's created two very lonely characters and placed them in an isolated house, almost as if to watch them interact as they simultaneously long for, and repel, the magnetic powers of love. Both his female and his male characters are desperately lonely, but their fear of being psychologically marred keeps them from surrendering to their emotional needs.