Frederick Engels, the book author of the detailed idea of ​​utopian socialism and science, Frederick Engels is a German philosopher and industrialist called the father of Marxist theory along with Karl Marx. He worked in industry and sociology, was a writer, political theorist, and philosopher. He is considered the father of Marxism theory, as well as Karl Marx himself. In 1845, he published The State of the Working Class in England based on his observations and personal research. In 1848, together with Marx, A. Dühring, a lecturer at the University of Berlin, he suddenly and with great fanfare issued his conversion to socialism, and presented to the German public not a theory of socialism, and advanced from the German public not only a crystallized theory of socialism, but also a complete practical plan for the reorganization of society And, as it should have pounced on his predecessors, Marx was especially privileged to receive the brunt of his anger