Abstract: This article analyzes the problem of interpretation by Jean-Paul Sartre of his philosophical views within the literary and philosophical works. The scheme of understanding of the “conceptual characters” is viewed on the example of the characters of the prominent philosophical texts. The link between the literary oeuvres and philosophical treatises of Sartre is described. Particular attention is given to the connection between the fictional works of the litterateur with his philosophical concept of the “Other”. The author also emphasized the correlation of the writer’s literary heritage with the concepts of “freedom”, “responsibility”, and “choice”. The article demonstrates the problem of understanding of these concepts due to the difficulty to distinguish the views of the French existentialist that he endows his characters with, and the views of the characters “themselves”. In the course of analysis of the indicated question the author uses the methodology of Deleuze and Guattari described in their work “What Is Philosophy”. The definition of “concept” is partially removed from the frame of references of the French philosophers; and partially retains the imparted specificity. The possible demarcations of the conceptual and purely literary characters are the problem area in the works of the French writer, so is the comprehension of the litterateur’s views, enclosed into the storyline of come plays. The field of application of the used in the article definitions of “concept” and “conceptual character” is the teaching of philosophy, particularly explanation of the peculiarities of its language.