Frankenstein only acts against it after his last family member is killed by it because he can no longer be accompanied by his family, which shows that he cares about himself himself more than the lives of other people. When the creature kills Doctor Frankenstein's brother, his good friend Henry and his wife Elizabeth, he does not want revenge because he still has his father to live for. However, after his father dies upon hearing of Elizabeth's death, he has lost all his social interactions, so he is lonely and unhappy. Before the monster's depredations, he can rely on his family when he is ill or depressed; but now it is close to the state of solitude that the creature has experienced since it was created. Therefore, Doctor Frankenstein becomes dehumanized and obsessed with revenge. He could only feel his pain after his entire family died, but he never thought of that creature's desperation. The creature, without constraints and without belonging, is alone for his whole life. As his creator, Doctor Frankenstein does not give him love, but cruelly leaves him. He could never understand why the creature takes revenge on him because he is a narcissist. In the article “Narcissism and Empathy in Delinquent and Non-Offender Youth,” author Erica G. Hepper explains that, “Although narcissistic individuals depend on the praise and respect of others to feed their ego, they lack communal motivation and they fail to consider the effect they have on others” (201). Doctor Frankenstein never bothers to think about what might happen to the creature after he rejects it. What matters to him is that he cannot bear to look at the creature, so he runs away And now, Doctor Frankenstein decides to take revenge on the creature that all his miseries are caused by himself. Surprisingly, after the death of Doctor Frankenstein, the creature comments to him next to his bed: “Oh, Frankenstein! to himself! What is the point of me asking you for forgiveness” (146)?