在五四社会主义大潮的激荡下 ,研究系知识分子在政治思想上转向改良式的社会主义。梁启超、张东荪改宗英国基尔特社会主义 ,张君劢则倾心德国社会民主主义。这种调和自由主义和社会主义的改良主义 ,旨在平衡个人自由和经济平等 ,寻求一条兼容自由主义和社会主义的现代化新路。研究系的改良式社会主义 ,表征着现代中国社会民主主义思潮的发端 ,它日后成为现代中国“第三条道路”的基本思想资源。 In the wake of the May Fourth Socialist Tide, the research department turned to intellectuals in the political thinking of improved socialism. Liang Qichao and Zhang Dongsun changed their English to Kirt Socialism while Zhang Junmai devoted themselves to German social democracy. This reconciled liberalism and socialist reformism are aimed at balancing individual freedom with economic equality and seeking a new path of modernization compatible with liberalism and socialism. The reformist socialism in the research department symbolizes the beginning of the trend of social democracy in modern China and becomes the basic ideological resource of the “third way” in modern China in the future.