Shchelkin A.G. Youth in ego-documents: encyclopedia of youth. St. Petersburg Sociology Today. 2021. No. 15. Pp. 36-53. Shchelkin A.G. Youth in ego-documents: encyclopedia of youth. St. Petersburg Sociology Today. 2021. No. 15. Pp. 36-53.ISSN 2308-3166DOI 10.25990/socinstras.pss-15.2czr-g315ÐÈÍÖ: https://www.elibrary.ru/item.asp?id=47245690Posted on site: 12.01.22 AbstractThe topic of childhood and adolescence continues to remain in the area of sociological attention. Along the way, those characteristics of this phenomenon are revealed, which, due to their fundamental signifi cance, can be called “existential”, and even better, “ontological”. However, the cognitive apparatus with which we approach childhood/adolescence does not always capture these remarkable characteristics. This conclusion is tested on the material of the book of memoirs and refl ections “The Encyclopedia of Youth” (Epstein, Yurienen, 2017). In particular, the opinion of prof. Dm. Shalin (University of Nevada) on the book of memoirs “Encyclopedia of Youth” is critically examined. In the course of this discussion, principled considerations have been made regarding the sociological signifi cance of the “phenomenon of youth” in society