Robert Paul Wolff explains the development of the classical theory of value from Adam Smith to Karl Marx in a form readily accessible to readers unfamiliar with anything more than high school algebra, while at the same time offering to the specialist a fundamental criticism of Marxian political economy and an original and controversial interpretation of Capital. He clarifies recent mathematical reinterpretations of classical political economy, so that philosophers, political scientists, psychologists, and sociologists interested in Marx's theories can understand the modern rehabilitation of his political economy. Originally published in 1985. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These paperback editions preserve the original texts of these important books while presenting them in durable paperback editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.