For the first time in Russian literature, the monograph explores the philosophy of Epicurus' religion, the history of its reception and interpretation, including in Russia. The features of Epicurus' teachings on gods and piety, the specifics of the ancient understanding of "godlessness" and the role of epicureanism in ancient free-thinking are analyzed. A significant place is given to the Western European epicurean tradition, Roman epicureanism, medieval receptions of epicureanism, the philosophy of religion of Epicurus in the assessment of Renaissance thinkers, the ideas of modern philosophers about the attitude of Epicurus to religion. For everyone interested in philosophy, religious studies, cultural history.