The letters of Mary Wollstonecraft and William Godwin mirror the relationship of a remarkable literary couple. The correspondence collected here covers the period from July 13, 1796, to August 30, 1797, when "their friendship turned to romance, their romance to passion, their passion to consummation, their affair to a highly unconventional marriage during which they lived far enough apart to permit the continuing exchange of letters. Wardle, a superb editor, provides just enough annotation to allow the relationship to unfold by itself through the correspondence of these two doctrinaire...