The book "A System of Logic, Rational and Inductive (Part 1 of 2)" is an outstanding work by the great philosopher and politician John Stuart Mill. In this book, the author examines the issue of logic as a science of thinking, proving his theses rationally and logically. It illuminates the essence of rational inference, the process of thinking and discovering truth through induction. This work is an important contribution to the development of philosophy and science and remains relevant to this day. Recommended for anyone interested in philosophy, logic and scientific thinking.