The novel builds on conflicting themes. The book Wuthering Heights is a spiritual exploration of the subject of good and evil. It compares judgment versus pity, love and obsession, and violence and revenge. The competing themes are deeply rooted in religion and social life.
The four thematic areas of pity, humility, love, and forgiveness promote good. Whereas choosing judgment, pride, obsession, and violence lead to evil. Joseph, a servant, had a twisted religious belief. Joseph referred to as a borderline Christian that belief much without supporting evidence. The good is represented by angels while the evil demonic spirits or ghosts. Lockwood nightmare of sleeping in church and later visitation with ghosts indicate good and evil survive side by side. The individual has the responsibility of making good choices.
The novel starts with the description of good and evil using imagery and repetition for clarity. The themes of good and evil have biblical references pitting images of angels and the devil. Mrs. Dean the narrator wonders if the environment affects how one turns out either good or evil. Privileged characters like Hindley are not immune to the personal choices individuals are forced to make. Upon Hindley's wife died, he renounces God and spirals into oblivion. Emily brings out the concept of religion and decisions about the afterlife. The personal choices force the characters to chose good or evil eventually ending up in anguish or peace represented by hell and heaven. Heathcliff represents evil marked by violence, revenge, pride, judgment, and obsession. Catherine, Isabella, Hareton and Mrs. Dean represent the good fighting evil that is Heathcliff. Cathy and Heathcliff represent violence, selfishness, and obsession that end up consuming them. The two rejected religion and heaven left wandering in the moors. Joseph represents neither good nor evil, having no stand represents religious hypocrisy where one believes he is good while having no character to exhibit the qualities. Hypocrisy tends to side with evil than good which is a contradiction.