The book "Fundamentals of Economics" offers a comprehensive introduction to the central terms and concepts of economics. It combines historical and contemporary philosophical approaches with economic thought structures and introduces readers to modern mathematical formalism. The content includes microeconomic fundamentals, circular flow analyses, national accounts, and multiplier analysis. Additionally, it provides a detailed examination of the monetary system, competition, and the role of the state in the economy. This textbook is particularly suitable for students and interested individuals who wish to develop a solid understanding of economic relationships.