Moral egoism is a philosophical theory that suggests individuals should act in their own self-interest. According to this view, actions are morally right if they promote one's own well-being, even if they may not benefit others. This perspective emphasizes personal happiness and fulfillment as the ultimate goals of ethical behavior. Proponents of moral egoism argue that by prioritizing one's own needs, individuals can contribute to society more effectively. Critics, however, contend that this approach can lead to selfishness and disregard for the welfare of others, raising questions about the balance between self-interest and altruism in ethical decision-making.