Economics wealth (capital) and a constant population size. Marxist (later, Marxian) economics descends from classical economics. It derives from the work of Karl Marx. The first volume of Marx's major work, "Das Kapital", was published in German in 1867. In it, Marx focused on the labour theory of value and the theory of surplus value which, he believed, explained the exploitation of labour by capital. The labour theory of value held that the value of an exchanged commodity was determined by the labour that went into its production and the theory of surplus value demonstrated how the workers only got paid
Karl Marx Library effort," Jordan presciently predicted. The first volume of the series, "On Revolution" (1971) broke little original ground for Marx scholars, containing only a spate of articles from the 1850s from Horace Greeley's "New York Tribune" on the contemporary situation in Spain that were not already readily available in other publications. Padover's failure to maintain a chronological presentation of documents was criticized by one reviewer, who observed that Marx's own views on the nature and time span of the revolutionary process evolved considerably during the second half of the 1800s. Padover's lengthy introduction to the first volume, "Karl Marx as Revolutionist,"