"A System of Logic, Rational and Inductive" is the fundamental work of the famous philosopher and political economist John Stuart Mill. In this book, the author considers various methods of logic, deductive and inductive thinking. Mill systematizes the principles of studying facts, formulates the laws of thinking and argumentation. It examines the nature of correct inference, argumentation strategies, and the process of forming scientific theories. "A system of logic, rational and inductive" is considered one of the classic works in the field of modern logic and philosophy.