中共沪州市委党校徐仁义认为,马克思主义社会主义理论的主要内容就是三论,即发展阶段论、横向论和纵向论。社会主义社会是由资本主义到共产主义社会之间的一个革命转变时期,是一个相当长的历史发展阶段。在这个阶段中,根据各个国家的具体状况,又可分为若干个小的发展阶段,这就叫做“发展阶段论”。社会主义理论有政治理论、经 Xu Renyi, a member of the CPC Shanghai Municipal Committee of the Communist Party of China, believes that the main contents of the Marxist theory of socialism are three stages: development stage theory, horizontal theory and vertical theory. Socialist society is a period of revolutionary change from capitalism to communism and a rather long stage of historical development. In this stage, according to the specific conditions of each country, it can be divided into several small stages of development. This is called “stage of development theory.” Socialist theory has political theory