This subject is presented as a prospect of the theme from the given course, counting three levels of complexity: knowledge, practice, integrity. There are treated more problems of the Romanian language: The origins of the Romanian language, the Romanian integrity, their continuity (people' s name) and our language, etc. D. Cantemir tries, as well as on the theoretical plane, as much as, in the writer’s practice to raise up the prestige of the Romanian language at the level of the European languages. The treated problems by Cantemir are presented from the perspective of their actuality. There is proposed the way by which Cantemir’s work can be studied, with some reassessments.