In Slavic communities also, money, as well as exchange to which it owes its existence, does not appear at all or very little within the separate communities, but it appears on their boundaries in their inter-communal traffic; in general, it is erroneous to consider exchange as a constituent element originating within the community. It appears at first more in the mutual relations between different communities, than in those between the members of the same community. Furthermore, although money begins to play its part everywhere at an early stage, it plays in antiquity the part of a predominant element only in one-sidedly developed nations, viz. trading nations, and even in most cultured antiquity, in Greece and Rome, it attains its full development, which constitutes the prerequisite of modern bourgeois society, only in the period of their decay. Thus, this quite simple category attained its culmination in the past only at the most advanced stages of society. Even then it did not pervade (?) all economic relations; in Rome e. g. at the time of its highest development taxes and payments in kind remained the basis. As a matter of fact, the money system was fully developed there only so far as the army was concerned; it never came to dominate the entire system of labor.
Thus, although the simple category may have existed historically before the more concrete one, it can attain its complete internal and external development only in complex (?) forms of society, while the more concrete category has reached its full development in a less advanced form of society.
Labor is quite a simple category. The idea of labor in that sense, as labor in general, is also very old. Yet, “labor” thus simply defined by political economy is as much a modern category, as the conditions which have given rise to this simple abstraction. The monetary system, e. g. defines