This article refers to a part of the research project entitled "The Marxian Scientificity in Maturity Work" and aims to clarify the categorial status, determinative of the two main concepts that are part of the Marxian critique of political economy in its mature version: forms of being and modes of production. Taken in the current language as virtually synonymous, the two concepts gain in scientific and philosophical corpus built by Marxist reflection, each one, a fairly precise meaning. We propose to clarify the theoretical content and function fulfilled by the two categories in question, drawing attention to the problem of articulation categorical thought that, in Marx, to reproduce, that is, translate and transpose the real man's head. Search will thus define the actual meaning of the modes, concrete social-historical, as kinds of articulation to be effective forms of sociability. Ways and forms of being loved, relationships and social processes are moments of categorical determination of corporate reality. On one side, there is a multiplicity of ways to be effective in relationships, activities and products. On the other side, is the joint that presides over the duration of that currently existing ways and parameter of sociality as a whole.
Marxology; critique of political economy; categories; modes; forms