This publication is a collection of texts by A. M. Kollontai, one of the most influential theorists of women's emancipation. Alexandra Kollontai’s theory of women’s liberation, developed from a class perspective, is an integral part of the feminist heritage. The book introduces A. M. Kollontai’s original ideas regarding the possibilities and obstacles to women’s emancipation related to the peculiarities of cultural ideas of society in general and women, in particular, about nature “ feminine." For modern readers studying the history and theory of feminism, her ideas about the social foundations of the “women's issue” become accessible; about the tasks of the women's proletarian movement; her critique of the feminist "bourgeois" project of women's liberation and theoretical reflections on gender relations and women's sexuality under socialism; her concepts of the “new woman”, “new sexual morality”, family and organization of life of citizens on communist principles. The publication of the collection is timed to coincide with the 130th anniversary of the birth of A. M. Kollontai. The design of the book uses graphic elements from the manuscripts of A. M. Kollontai.