Paul Feyerabend is an American philosopher, author of the famous “anarchist theory of knowledge.” How to determine the relationship between reason and practice? What is a “free society”, what place is given to science in it, what role do traditions play? What should be the basis of a theory that could solve the basic problems of a “free society”? This is the famous work of P. Feyerabend “Science in a Free Society”, published for the first time in Russian without abbreviations.