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.

Abstract: The subject of the research is the views on the language and spelling presented by French scientists of the 16th - 17th centuries, in particular, Geoffroy Tory (1480-1533), Jacques Dubois (1478—1555), Pierre Ramée (1515-1572), Luis Maigret (1510-1558),  Antoine Arnauld  (1612-1694) and Claude Lancelot (1615-1695) who published The Port-Royal Grammar, and Bernard Lamy (1640-1715). The object of the research is the works of these authors written in the French language. In her research Schekochikhina focuses on the relationship between the philosophy of those times and linguistic concepts of these researchers. She analyzes works of French researchers of the 16th - 17th centures on the language and spelling and describes linguistic concepts of these researchers and how their views on the language have been changing in the 16th - 17th centuries. The concept of the language that was quite common for rational grammers of the 17th century appeared as a result of debates on the French spelling of the precedent century. By the 16th century the French spelling had a lot of contradictions between a graphic image of a word and a new way to pronounce a word. However, the researchers had to solve a number of theoretical issues before creating general principles of writing. The practical aim to improve the spelling made the researchers raise a question about ideal graphic images of words and spelling, and solve a number of theoretical issues (for example, the question about the relationship between the speech sound and grapheme. While the 16th century saw discussions about spelling rules of the French language, the 17th century gave a start to creation of principles of the graphic (written) language in general.