This book includes six important works by prominent philosophers, historians and sociologists of their time - Karl Marx and Friedrich Engels.The "Principles of Communism", written in the format of answers to questions, concerns the explanation of such fundamental things as the concept of communism, the emergence of the proletariat and the consequences of the industrial revolution.The Communist Manifesto is one of the most famous works of Marx and Engels, translated into many European languages. This work determined the direction of social thought and became an important historical evidence of the formation and development of socialism. Umberto Eco, the greatest philosopher and scientist of our time, called it "a masterpiece of political eloquence".The publication is supplemented with works and essays by K. Marx and F. Engels, as well as expert comments.In PDF format A4 retained publishing design.