one has learned the nature of rent. But they must not be considered identical.
Since, furthermore, bourgeois society is but a form resulting from the development of antagonistic elements, some relations belonging to earlier forms of society are frequently to be found in it but in a crippled state or as a travesty of their former self, as e. g. communal property. While it may be said, therefore, that the categories of bourgeois economy contain what is true of all other forms of society, the statement is to be taken cum grano salis. They may contain these in a developed, or crippled, or caricatured form, but always essentially different. The so-called historical development amounts in the last analysis to this, that the last form considers its predecessors as stages leading up to itself and perceives them always one-sidedly since it is very seldom and only under certain conditions that it is capable of self-criticism; of course, we do not speak here of such historical periods which appear to their own contemporaries as periods of decay. The Christian religion became capable to assist us to an objective view of past mythologies as soon as it was ready for self-criticism to a certain extent, dynamei so-to-say. In the same way bourgeois political economy first came to understand the feudal, the ancient, and the oriental societies as soon as the self-criticism of the bourgeois society had commenced. So far as bourgeois political economy has not gone into the mythology of purely (?) identifying the bourgeois system with the past, its criticism of the feudal system against which it still had to wage war resembled Christ-
