This introductory textbook provides a broad introduction to the field of macroeconomics and the alternative approaches to modeling an economic system. Adopting a pluralistic approach, it rigorously analyzes the theories and policies proposed by the classical and neoclassical, Marxian, institutionalist, Keynesian and post-Keynesian schools of thought. It critically examines fiscal, monetary, and regulatory policies prescribed by the different schools, exploring the intricate links between the economy, society and nature. It ultimately demonstrates that economic modeling is always a matter of choice and compromise, and no one school of thought can accurately capture the full essence of a real evolving economic system under all circumstances, in all places, and at all times in history.Key Features:Presents a realistic picture of human economic behavior based on empirical evidence from multiple scientific disciplinesDiscusses alternative approaches to modeling an economic system, and explains the advantages and weaknesses of eachDraws on diverse schools of economic thought and other scientific disciplines to explain why an economic system is never a stationary structure but always in a process of dynamic changeFocuses on how macroeconomic policy can be improved in a time of growing inequality, insecurity, and ecological stresses and contradictionsInterdisciplinary in scope, this textbook will prove essential to scholars, researchers and students of economics and finance, especially those interested in political economy, evolutionary economics, environmental economics, development economics, and radical and feminist economics. Economists and social scientists seeking alternative approaches to macroeconomics will equally benefit from this fundamental resource.