Marx Brothers and Chico appeared less prominently. The two younger brothers, Gummo and Zeppo, never developed their stage characters to the same extent as the elder three. They each left the act to pursue business careers at which they were successful, and for a time ran a large theatrical agency through which they represented their brothers and others. Gummo was not in any of the movies; Zeppo appeared in the first five films in relatively straight (non-comedic) roles. The performing lives of the brothers owed much to their mother Minnie Marx, who acted as their manager until her death in 1929. The
The Concept of Nature in Marx The Concept of Nature in Marx The Concept of Nature in Marx () is a 1962 book by the philosopher Alfred Schmidt. First published in English in 1971, is a classic account of Karl Marx's ideas about nature. The critic Terry Eagleton summarizes Schmidt as arguing that, according to Marx, "Human beings are part of Nature yet able to stand over against it; and this partial separation from Nature is itself part of their nature." "The Concept of Nature in Marx" has been seen as a classic work. The philosopher Herbert Marcuse offers a discussion of the role of nature