The book of the famous historian A.V. Shubin is the result of many years of research into the development of socialist thought from Mora to Lenin - a kind of encyclopedia of socialist ideas, but written as a documentary novel. Adherents of Marxist, anarchist and liberal ideas settle intellectual scores with each other. And the author of the book returns these disputes to the framework of scientific objectivity. The reader will open an unusual picture of the struggle in the International, community experiments, the Paris Commune, Russian revolutions. The book is intended for historians, political scientists, philosophers, sociologists, participants in the social movement.