Natural organisms almost without exception exhibit, when closely observed, a really admirable functionality of all parts with respect to the whole, a functionality which is not, however, the result of human calculation, but of a natural process. Similarly we can observe in numerous social institutions a strikingly apparent functionality with respect to the whole. But with closer consideration they still do not prove to be the result of an intention aimed at this purpose, Le., the result of an agreement of members of society or of positive legislation. They, too, present themselves to us rather as "natural" products (in a certain sense), as unintended results of historical development. One needs, e.g., only to think of the phenomenon of money, an institution which to so great a measure serves the welfare of society, and yet in most nations, by far, is by no means the result of an agreement directed at its establishment as a social institution, or of positive legislation, but is the unintended product of historical development. One needs only to think of law, of language, of the origin of markets, the origin of communities and of states, etc. Now if social phenomena and natural organisms exhibit analogies with respect to their nature, their origin, and their function, it is at once clear that this fact cannot remain without influence on the method of research in the field of the social sciences in general and economics in particular. . . . Now if state, society, economy, etc., are conceived of as organisms, or as structures analogous to them, the notion of following directions of research in the realm of social phenomena similar to those followed in the realm of organic nature readily suggests itself. The above analogy leads to the idea of theoretical social sciences analogous to those which are the result of theoretical research in the realm of the physico-organic world, to the conception of an anatomy and physiology of "social organisms" of state, society, economy, etc.