Abstract: This article examines the views of G. Deleuze, F. Guattari and M. K. Mamardashvili upon philosophical language and its components. The author analyzes the classification of texts into direct (analytical) and indirect (predicatory) proposed by the Soviet thinker. The famous philosophical works of various stylistics are brought as an example. Special attention is given to the views of Mamardashvili ipin the philosophical notions that he calls “marginal subjects” or “marginal representations”, as well as the views of Deleuze and Guattari upon the philosophical concepts that they call the “concepts”. The article establishes connection between the diverse classifications and opinions upon the specificity of philosophical notions and texts, and ascertains the importance of contribution made by Mamardashvili, Deleuze and Guattari to methodology of the study of philosophical language. Leaning on the material of Mamardashvili’s lecture on the modern European philosophy, the author underlines the specificity of contribution of the Soviet thinker to the development of methodology of the analysis of philosophical language.