In "Two on a Tower," a love story set against the background of the stellar universe, Hardy defied social norms of the day and shocked his readers. In what is today seen as the author's most important portrayal of love across physical and societal divides, the novel tells the story of Lady Constantine, a married, older, aristocratic, religious woman who falls in love with Swithin St. Cleeve, a young astronomer, single, lower class, and agnostic. Hardy's...