Contemporary analysis of Wuthering Heights necessitates a re-appraisal in light of advancements in the study of incest in non-literary fields such as history, anthropology, and especially psychology. A modern reading suggests that an unconscious incest taboo impeded Heathcliff and Cathy's expectation of normal sexual union and led them to seek union after death. John Milton's Paradise Lost provides a paradigm by which to examine the consequences of incest from two perspectives: that of incest as a metaphor for evil, as represented in Heathcliff; that of incest as symbolic of pre-Lapsarian innocence, as represented in Cathy. The tragic consequences of Heathcliff and Cathy's incestuous fixation are resolved by the socially-condoned marriage of Hareton and Catherine, which illuminates Bronte's belief in the Miltonic theme that good inevitably triumphs over evil.