The Paganism and Christianity in the book are perceived and studied as completely independent historical and cultural paradigms, as two civilizations, two systems of thinking and values, each of which is self-sufficient and fulfilled human being. The subtitle of the book "Polyparadigmatic research of the cultural conflicts in the Middle Ages" specifies the subject and method of research. According to the author, any attempt to analyze these conflicts within the framework of one individual culture or a certain religious paradigm would be fruitless. In each case the research will result in a dead end. If we choose a Catholic paradigm this will only allow us to deny or belittle the importance of a different paradigm, for example, Orthodoxy or Paganism, embodying polytheism. Thus the traditional method of comparatives is given a new direction of polyparadigmatic research, whereby cultural occurrences are compared not only by analogy, but also by contrast, without giving preference to any of the phenomena being compared. In the history of culture of Lithuania, unfortunately, is still dominated by traditional monoparadigmatic method of research with catholic hierarchization, continuing the line of the Polish historiography of the 19th - 20th centuries. In 2012, Bučys published "History and Anthology of Ancient Lithuanian Literature" with 13 texts in old Slavonic and Church Slavonic languages, most of them were sacred and were never presented in the context of Lithuanian culture. Among them – medieval “Vita of Vaishvilkas”, the son of king Mindaugas, who founded in the middle of the 13th century one of the oldest monasteries of the Greek rite on the bank of the Nemunas river, and other sacred texts, devoted to forgotten or completely unknown in modern Lithuania the Orthodox saints St. Charitina of Lithuania († 1281) and St. Timothy Daumant († 1299). According to Lithuanian literary critic and philosopher of culture V. Daujotytė, ""here comes a very important idea in the book of A. Bučys: conflicts have arisen and arise from the fact that the world from the middle ages, and earlier, could not and cannot agree, cannot find a common language due to various approaches and a fierce desire for a single truth. The position of the author, tested and discussed, it seems reasonable: " "the true sacral base by its nature is not compatible with any mono-paradigm“; sacred nature lies deeper than reaches the dogma of “monopartism” in religion and in the humanities.