She supported rational and ethical egoism and rejected altruism. Narcissism is not the same as egocentrism or egoism. Rule consequentialism exists in the forms of rule utilitarianism and rule egoism. Sidgwick found it difficult to find any persuasive reason for preferring rational egoism over utilitarianism. Stirner has been broadly understood as descriptive of both psychological egoism and rational egoism. Stirner also does not advocate a narrow prescriptive ethical egoism of self-interest. It has been argued that extreme ethical egoism is self-defeating. The view is a normative form of egoism. However, these doctrines may occasionally be combined with ethical egoism. Individual self-realization rests on each individual's desire to fulfill their egoism. Yangism has been described as a form of psychological and ethical egoism. Yangism was a form of ethical egoism founded by Yang Zhu. It also demonstrates that egoism and pride (here of Yama) are always humbled. Her egoism and her vanity are colossal. Stirner's philosophy is usually called "egoism".