A great deal may be learned about society by studying man; but this process
cannot be reversed: nothing can be learned about man by studying society—by
studying the inter-relationships of entities one has never identified or
defined. Yet that is the methodology adopted by most political economists.
Their attitude, in effect, amounts to the unstated, implicit postulate: “Man is
that which fits economic equations.” Since he obviously does not, this leads to
the curious fact that in spite of the practical nature of their science,
political economists are oddly unable to relate their abstractions to the
concretes of actual existence.