First published in 1848, 'Principles of Political Economy' established Mill as a leading economic thinker of his time, and this work endured as the principal economics textbook for the balance of the nineteenth century. As a comprehensive treatment of economic thought, the book touches on the full range of micro- and macroeconomic topics, including taxation, national debt, and theories of money, production, and prices. Volumes 2 and 3 are based on the seventh and final edition of this work published by Mill in 1871. Professor Robson and his editorial team allow the reader to seamlessly track the changes made through all seven editions of Principles of Political Economy, providing insight into the development of Mill's economic ideas.