在西方原有的比较文学学科理论框架中,东西方不同文明之间文学比较的合法生是受到怀疑的。例如,美国著名比较文学学者韦斯坦因就认为不同文明之间的文学比较是不可行的,因为东西方不同文明之间的文学没有相同性。事实上,在西方原有的比较文学学科理论中,东西方不同文明之间的文学是没有可比性的;东西方文学的比较失去了合法性。这种不正常现状显然应当改变。西方比较文学学科理论的这个重大缺憾,现在需要弥补。中国比较文学学者提出的变异学理论,成为比较文学学科理论的重要突破。变异学重新为东西方文学奠定其合法性,这个合法性就是异质性和变异性,变异学肯定了差异的可比性的,从正面回答了韦斯坦因的困惑,奠定了东西方不同文明文学比较的合法性。变异学理论,必将开创比较文学学科理论的新阶段,推动全世界比较文学研究的发展。 In the original theoretical framework of comparative literature in the West, the legitimate students of literary comparison between different civilizations of East and West were suspicious. For example, the famous American comparative literature scholar Stein considered that comparison of literatures among different civilizations is unfeasible, because the literatures of different civilizations in East and West are not the same. In fact, in the original theory of comparative literature in the West, the literature between East and West civilizations is not comparable; the East-West literature has lost its legitimacy. This abnormal situation should obviously change. This major shortcoming of the Western comparative literature theory needs to be remedied. The theory of variation given by Chinese comparative literature scholars has become an important breakthrough in the theory of comparative literature. Variations re-establish the legitimacy of Eastern and Western literature, this legitimacy is the heterogeneity and variability, Variance affirmed the comparability of differences, from a positive answer to the confusion of Weisitan, laid the East and West of different civilizations Comparison of the legitimacy. The theory of variation will surely open a new phase of comparative literature theory and promote the development of comparative literature in the world.