Research of scientific knowledge within the framework of the concepts and methods of logic form the logical theory of scientific knowledge. The book by the outstanding Russian thinker A. A. Zinoviev provides a systematic construction of the concept of the logical theory of scientific knowledge, which was outlined by the author in a number of previously published works on its individual problems. The main goal of the book is to give as simple a statement as possible of the ideas and principles that the author considers promising for the theory of scientific knowledge. The book is recommended for philosophers, logicians and methodologists of science, students of relevant specialties, as well as anyone interested in problems of logic and philosophy of science.