Throughout Wuthering Heights, Emily Bronte's poignant and bittersweet saga of
             excessive passion, we see the recurring juxtaposition of love and obsession and the
             damage that results from that lethal combination. We watch as the doomed lovers
             Heathcliff and Catherine seek vengeance against one another and in doing so curse
             the lives of those to come.
             Heathcliff, a brooding and tormented character from our earliest glimpses of
             him in this novel, targets Catherine as the center of his universe from the time of
             their childhood. Catherine's wild nature and free spirit mesmerized him , and grant
             him some release from his wretched existence at the Heights. As they mature, their
             feelings for each other deepen into something primal, an almost living thing that
             eventually consumes them both. One of the first times that we see Heathcliff's true
             obsessive nature is when he reveals to Cathy the calendar he has been keeping. On
             it, he has marks every one of Catherine's days and whether or not she has spent it
             with him. This shows the reader the extent to which Heathcliff will go in pursuit of
             Cathy. Cathy's startled reaction to this is an indication of the hesitence on her part
             to succumb to her own almost overpowering feelings for Heathcliff. It is almost as
             though she is beginning to recognize the power and depths of their emotions and the
             danger of becoming hopelessly emmeshed and lost in it's tangles.Heathcliff's
             already unnatural yearnings for Cathy become even darker and more potent after his
             mysterious two year absence. When Heathcliff returns, transformed into a wealthy
             landowner, his love for Cathy takes a peculiar twist. He is distressed by Cathy's
             marriage to the innocuous Edgar Linton of Thrushcross Grange. In Heathcliff's
             malicious hunt for revenge against both Cathy and Edgar, he plots to marry Edgar's
             younger sister Isabella with malevolent intent. Unable to ...