 At the same time Bučys began to form the concept of comparative literature in contrast, not only by analogy.The theoretical basis and possibilities of comparative literature to contrast he presented in different aspects in a special theoretical papers, the article "National identity and the global context", translated into several languages.In 2009, there is a book "The ancient Lithuanian literature in the time of king Mindaugas", in which analysis of cultural conflicts in the collision of Lithuania in the 13th century is based on the prior experience of the analysis of the constant interactions of the "center" and "periphery".