Socialism: Utopian and Scientific of thousands of copies. Throughout the decade of the 1860s, Karl Marx, close personal friend and political associate of Friedrich Engels, dedicated himself to the study of economics, culminating in the publication of the first volume of "Das Kapital" in 1867. Marx's lengthy and ponderous volume was extremely difficult for the average to penetrate, however, leading Engels to suggest to Marx in a letter of September 16, 1868 that a short popularized version of "Das Kapital" for a working class audience was urgently needed. "If it is not written, some Moses or other will come along and do it and
Capitalist mode of production (Marxist theory) title, "Das Kapital"), as a whole that provides his "definition" of the capitalist mode of production. Nevertheless, it is possible to summarise the essential defining characteristics of the capitalist mode of production as follows: In examining particular manifestations of the capitalist mode of production in particular regions and epochs, it is possible to find exceptions to these main defining criteria, but the exceptions prove the rule in the sense that over time the exceptional circumstances tend to disappear. As mentioned, Marx never explicitly summarised his definition of capitalism, beyond some suggestive comments in manuscripts which he did not publish himself.