George Zimmel, Social Differentiation: Sociological and Psychological Research (1909) is a fundamental work that touches on the most important aspects of social structure and interaction in society. Simmel, as one of the founders of sociology, in this work examines the deep processes of social differentiation from the point of view of both sociology and psychology, revealing the mechanisms that determine the separation and interaction of different social groups. Book description: In Social Differentiation, Simmel explores how and why society is divided into different groups, how this division affects the individual, and what psychological factors are behind such processes. The book analyzes in detail the impact of social status, cultural differences and psychological characteristics on the behavior and perception of individuals in social groups. Simmel not only considers specific manifestations of differentiation, but also raises philosophical questions about the essence of social relations, culture and identity. Particular attention is paid to the role of individual differences and cultural factors in the formation of social structures and personal relationships. Simmel also analyzes how social differences and differentiation affect the life of each person and, more broadly, the development of society as a whole. It is a classic work that still influences the development of sociology and psychology. It opens a deep understanding of the processes of social differentiation and its psychological mechanisms. Dives into the most important philosophical questions about the nature of human relations in the context of social stratification. There are stamps of libraries