Paparrigopoulos is considered the "national" historian of modern Greece. In his
History of the Greek Nation, he regarded the history of
Greece from the ancient years till nowadays as a unity, insisting on the continuity of the Greek nation. At the same time he promoted the importance of the
Byzantine Empire and of the Byzantine history in general. Because of his profound surveys, the disdain towards the Byzantine history was limited. The interpretation of
Byzantium's Greek character in the work of Sp. Zampelios was the first step in the effort to refute Fallmerayer's theory. It was supported that the ancient Greek civilization had not faded away, but had been creatively reshaped as it met Christianity, which took place during the Byzantine Empire. With Zampelios then, the foundations were prepared in order for a total national history to be written, in order for the past, the continuous course of the Greek nation from
antiquity till the 19th century, to be narrated. This ambitious project was undertaken and completed by Constantine Paparrigopoulos, who is considered for this reason the founder of Greek national historiography, also known as Greek historism. Paparrigopoulos, as well as Sp. Zampelios, set the basis of the modern Greek historiography and influenced the modern Greek society. Since, their work did not concern only a closed and restricted circle of specialists and academics. It was addressed to the society of their times, in order to strengthen their national self-knowledge. Paparrigopoulos' classes at the University, which constituted the raw material for the writing of his memorable History, were frequently published in Pandora magazine, of which he was the co-publisher, as well as in the Athenian Press. The term Greek-Christian which was devised for scientific purposes, functioned towards the same direction but did not remain a simple instrument of analysis in the hands of specialists. As this term appeared in early ninth century, it became a canvass on which the ideology of the Greek state was developed and shaped. The content of education, the orientation of historical studies and the study of tradition (folklore) were organized on this basis. In addition, the
Megali Idea (Greek Great Idea) which was nebulous until that time, acquired flesh and bones. The Byzantine Empire, which had now been acclaimed a cultural mold of the Greek state which was still small, became the model for its territorial expansion. Paparrigopoulos wrote on both Greek history, spanning from ancient Greece to modern Greece, and modern
Hellenism. ==His writings==