Abstract: This article examines the impact of Herman Conring (1606-1681) on Jean Mabillon (1632-1707). The “Diplomatics” of Jean Mabillon laid the foundations for an entire number of auxiliary disciplines of history (diplomatics, paleography, sigillography, codicology, etc.). The significance of “Diplomatics” for the history of linguistic consists in its outlook upon the writing system and language as a whole as a variable system. Herman Conring  in his work dedicated to letter from Lindau, was one of the first to formulate the principle of historicism for studying medieval artefacts. Along with Conring, Mabillon considered the letter from Lindau a forgery (although he identified in this compilation of factitious and authentic fragments the genuine features, and once voiced the opposite). There are several moments in “Diplomatics”, on which Mabillon enters into polemics with Conring. The similarity in the approaches is traced in gradual application of the principle pf historicism. In the chapter on orthography, can be seen the influence of Conring, although in this fragment Mabillon does not refer to him. The article juxtaposes the views of Corning and Mabillon on the methods of studying the artefacts. The author briefly reviews the contexts of creating the works of the two polymaths. A consistent correlation between the theoretical constructs of Corning and Mabillon has not been previously conducted within the Russian, and even world science. Such research allows understanding the evolution of knowledge on language, as well as how the science on written artefacts obtained the method that in many ways predetermined the development of philology in the following centuries.

Abstract:  
The article is devoted to the influence of rationalistic philosophy on Jean Mabillon. Although some researchers are appealing to Mabillon's "cartesan", this topic has not yet received coverage in Russian and foreign academic literature. However, without studying this question, it seems impossible to understand the method of Jean Mabillon that had a great impact on his work “Diplomacy” in which the Benedictine scientist was able to lay the foundation of such sciences as paleography, codicology, diplomatics and sphragistics. The researcher focuses on the work of Jean Mabillon "Diplomacy" and "Treatise on the sciences in monasteries." The author of the article uses the method of compariso to compare the arguments of Mabillon to the philosophical and linguistic works of those times as well as the hermeneutic method. The main conclusion of the study is the statment that the rationalism philosophy had a strong influence on the development of the method of Jean Mabillon. Jean Mabillon actively used the philosophical dictionary of his time and was well acquainted with the works of rationalism philosophers. The contribution of the author of the article is the establishment of parallels in the writings of Jean Mabillon and other philosophers and rationalist scientists on the example of specific contexts.