The basic concern of the author is to find the reason for the persistent leftist character of French working-class politics in a period of rapid industrialization and improving living standards. Reanalyzing material from surveys made by two French organizations, he finds that increased affluence is correlated with changes in social structure that increase radicalism. As rural and small-town workers come into big cities and large plants, they are influenced by political activists who provide them with a Communist frame of reference for interpreting the meaning of new affluence. Originally published in 1967. 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 editions preserve the original texts of these important books while presenting them in durable paperback and hardcover 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.