We have a drama laced with humor, most of it acid and utterly devoted to the power of metaphor, simile, paradox -- and wit. Not the debased, bilious language the spills from most stages these day, but words that matter, that touch the soul. Nixon gives us a woman whose mind demands attention even as her body is inexorably failing. You hear urgency in the crackling tone of her voice and see it in the undimmed sparkle in her eyes. She never stops wrestling.