Principles of Political Economy by John Stuart Mill was one of the most important economics or political economy textbooks of the mid-nineteenth century. It was revised until its seventh edition in 1871, shortly before Mill's death in 1873, and republished in numerous other editions.
John Stuart Mill, usually cited as J. S. Mill, was a British philosopher, political economist, and civil servant. One of the most influential thinkers in the history of classical liberalism, he contributed widely to social theory, political theory, and political economy.