The book "A System of Logic: Rational and Inductive, 7th Edition, Volume I" by the famous philosopher and economist John Stuart Mill is an important work in which the author considers the issue of logical thinking and deriving conclusions in both rational and inductive logic. The book examines in detail methods of thinking, processes of analysis and synthesis, arguments and conclusions, as well as important aspects of logical thinking. John Stuart Mill expresses his thoughts on the role of logic in the development of science and philosophy, helping the reader to better understand the essence of logical thinking. This book is an important source of knowledge for those interested in logic, philosophy, and methods of argumentation.