The book of Anatoly Leshchinsky is a collection of religious studies published over several decades. The collection also includes some unpublished works. In the book, all materials are located in three sections, that is, in the research areas that the author of the collection is engaged in. In the first section of publications, the problem of church unity, the influence of social determinants on jurisdictional differentiations, and the emergence of alternative jurisdictions in them (in theological terminology, schisms) are investigated. The second section includes fragments from books and articles related to the philosophy of memory. In the third section - works on the study of the formation of relations between the state and religion and the church and views on these relations in theology, philosophy, socio-political teachings.