“An important representative and theoretical advocate of the spoken language was the poet and doctor Athanassios Christopoulos (1772-1847), a member of the circle of Katartzis, whose ideas on language he supported and promoted. Little later, after contacting the circle of the poet Ioannis Vilaras, he adopted for a short time his extreme language theory involving the abolition of the historical spelling and the use of the phonetic alphabet. Later, like many other scholars of his generation, he abandoned the language theories of his youth and turned to more conservative views.

While living in Bucharest in the court of the ruler of Wallachia, he was a student of D. Katartzis and experienced first-hand his effort for renovation and the attacks against the vernacular language, and therefore sought to defend it. The principles of his language theory are set out in the preface of his work Γραμματική της Αιολοδωρικης ή ομιλούμενης τορινής των Ελλήνων γλώσσας, published in 1805.

Christopoulos, after conducting a comparative study of ancient Greek and the currently spoken language identified numerous similarities in both ancient Greek dialects, the Aeolian and the Doric with the spoken language, and that is why he claimed that modern Greek has developed from ancient Greek and actually from both these dialects. For the Phanariote scholar there are no good and bad languages, barbaric and civilized ones. On the contrary, he considers language an instrument and means of communication and education, rejecting the opinion that the spoken language is barbaric, due to the changes in words, inflexion and syntax that occurred as time passed. According to him, change in the form and syntax of a language is a natural development, that occurs progressively and constantly through time in every language”. p(p.  280)