Abstract: The article is devoted to the 100th anniversary of the Institute of Philosophy of the Russian Academy of Sciences (IPhRAS), held in 2021. The purpose of the article is to give an overview of IPhRAS's contribution to the study of Aristotle's ethics within the framework of domestic Aristotelian studies, to note the main works of IPhRAS employees in this field. The material of the article is aimed not only at summing up the results to a significant date, but can be used as an auxiliary reference point in the domestic research literature by all those interested in the ethics of Aristotle. The article examines the articles and monographs of IPhRAS employees, makes brief descriptions of the most significant ideas expressed in them, analyzes the general process of development of Aristotle's ethics research in IPhRAS. The result of the conducted research is the identification of two directions in the study of Aristotle's ethics by IPhRAS employees – philosophical-theoretical and historical-philosophical. Within the framework of the first direction, two types are also distinguished: those aimed at the theoretical reconstruction of Aristotle's teaching on morality itself and those that turn to Aristotle's works in search of modern significant concepts. The second direction is represented by translation work, structural and comparative analysis of Aristotle's texts in order to reproduce them as accurately as possible and clarify individual concepts and statements. The main conclusion of the study is the statement that IPhRAS has not yet developed a holistic school in the approach to the study of Aristotle's ethics, and also that the two discovered areas of research are being implemented separately from each other. However, in both directions, researchers proceed largely from the analysis of the philosophical language of the Stagirite, which makes not only historical and philosophical works significant for philosophical and theoretical ones, but also vice versa. Also, despite a relatively short history, the study of Aristotle's ethics at IPhRAS has a systematic nature, all generations of employees are involved in it, which promises its further successful development.

Abstract: The subject of this research is the systematization of the core concepts of Aristotle’s ethical doctrine within the framework of historical-philosophical approach. The author examines such problems as the authenticity of Aristotle’s texts (three Ethics: Nicomachean Ethics, Eudemian Ethics and Big Ethics); wholeness of his philosophical system (interconnection of metaphysics and ethics – its substantiation in Unitarian approach and criticism of Unitarianism); moral and non-moral grounds of the definition of happiness (interpretations of Aristotelian understanding of good: inclusivism, exclusivism, instrumentalism); functional capacity of the concept of virtue as a mean; ambiguity of the definition of friendship and its role in formation of the moral. The main conclusion lies in ascertainment of the positive impact of historical-philosophical approach upon studying Aristotle’s ethics – in all incompleteness of results and continuous discussions on each of the indicated questions, the scientific approach allowed to not only reconstruct the collection of Aristotle’s works, but also meticulously analyze the structure of his ethics, nuancing the key concepts. The scientific value of the conducted research consists in guiding the emerging researchers of Aristotle’s philosophy, as well as philosophical ethics overall, in the problematic field of the Stagirite's ethical doctrine.