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 wealth quite objectively, as a thing (?)[164] in money. Compared with this point of view, it was a great step forward, when the industrial or commercial system came to see the source of wealth not in the object but in the activity of persons, viz. in commercial and industrial labor. But even the latter was thus considered only in the limited sense of a money producing activity. The physiocratic system [marks still further progress] in that it considers a certain form of labor, viz. agriculture, as the source of wealth, and wealth itself not in the disguise of money, but as a product in general, as the general result of labor. But corresponding to the limitations of the activity, this product is still only a natural product. Agriculture is productive, land is the source of production par excellence. It was a tremendous advance on the part of Adam Smith to throw aside all limitations which mark wealth-producing activity and [to define it] as labor in general, neither industrial, nor commercial, nor agricultural, or one as much as the other. Along with the universal character of wealth-creating activity we have now the universal character of the object defined as wealth, viz. product in general, or labor in general, but as past incorporated labor. How difficult and great was the transition, is evident from the way Adam Smith himself falls back from time to time into the physiocratic system. Now, it might seem as though this amounted simply to finding an abstract expression for the simplest relation into which men have been mutually entering as producers from times of yore, no matter under what form of society. In one sense this is true. In another it is not.

The indifference as to the particular kind of labor implies the existence of a highly developed aggregate of different species of concrete labor, none of which is any longer the predominant one. So do the most general abstractions commonly arise only where there is the highest concrete development, where one feature appears to be jointly possessed by many, and to be common to all. Then it can not be thought of any longer in one particular form. On the other hand, this abstraction of labor is but the result of a concrete aggregate of different kinds of labor. The indifference to the particular kind of labor corresponds to a form of society in which individuals pass with ease from one kind of work to another, which makes it immaterial to them what particular kind of work may fall to their share. Labor has become here, not only categorically but really, a means of creating wealth in general and is no longer grown together with the individual into one particular destination. This state of affairs has found its highest development in the most modern of bourgeois societies, the United States. It is only here that the abstraction of the category “labor,” “labor in general,” labor sans phrase, the starting point of modern political economy, becomes realized in practice. Thus, the simplest abstraction which modern political economy sets up as its starting point, and which expresses a relation dating back to antiquity and prevalent under all forms of society, appears in this abstraction truly realized only as a category of the most modern society. It might be said that what appears in the United States as an historical product,—viz. the indifference as to the particular kind of labor—appears among the Russians e. g. as a natural disposition. But it makes all the difference in the world whether barbarians have a natural predisposition which makes them applicable alike to everything, or whether civilized people apply themselves to everything. And, besides, this indifference of the Russians as to the kind of work they do, corresponds to their traditional practice of remaining in the rut of a quite definite occupation until they are thrown out of it by external influences.

This example of labor strikingly shows how even the most abstract categories, in spite of their applicability to all epochs—just because of their abstract character—are by the very definiteness of the abstraction a product of historical conditions as well, and are fully applicable only to and under those conditions.

The bourgeois society is the most highly developed and most highly differentiated historical organization of production. The categories which serve as the expression of its conditions and the comprehension of its own organization enable it at the same time to gain an insight into the organization and the conditions of production which had prevailed under all the past forms of society, on the ruins and constituent elements of which it has arisen, and of which it still drags along some unsurmounted remnants, while what had formerly been mere intimation has now developed to complete significance. The anatomy of the human being is the key to the anatomy of the ape. But the intimations of a higher animal in lower ones can be understood only if the animal of the higher order is already known. The bourgeois economy furnishes a key to ancient economy, etc. This is, however, by no means true of the method of those economists who blot out all historical differences and see the bourgeois form in all forms of society. One can understand the nature of tribute, tithes, etc., after 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 Christian criticism of the heathen religions or Protestant criticism of Catholicism.

In the study of economic categories, as in the case of every historical and social science, it must be borne in mind that as in reality so in our mind the subject, in this case modern bourgeois society, is given and that the categories are therefore but forms of expression, manifestations of existence, and frequently but one-sided aspects of this subject, this definite society; and that, therefore, the origin of [political economy] as a science does not by any means date from the time to which it is referred as such. This is to be firmly held in mind because it has an immediate and important bearing on the matter of the subdivisions of the science.

For instance, nothing seems more natural than to start with rent, with landed property, since it is bound up with land, the source of all production and all existence, and with the first form of production in all more or less settled communities, viz. agriculture. But nothing would be more erroneous. Under all forms of society there is a certain industry which predominates over all the rest and whose condition therefore determines the rank and influence of all the rest.

It is the universal light with which all the other colors are tinged and are modified through its peculiarity. It is a special ether which determines the specific gravity of everything that appears in it.