The social sciences are usually concerned with groups of persons rather than individual persons. The behavior of individuals, being free, is unpredictable.
Carroll QuigleyIt is clear that every civilization undergoes a process of historical change. We can see that a civilization comes into existence, passes through a long experience, and eventually goes out of existence.
Carroll QuigleyA civilization is complicated, in the first place, because it is dynamic; that is, it is constantly changing in the passage of time, until it has perished.
Carroll QuigleyCapitalism might be defined, if we wish to be scientific, as a form of economic organization motivated by the pursuit of profit within a price structure.
Carroll QuigleyWhen profits are pursued by geographic interchange of goods, so that commerce for profit becomes the central mechanism of the system, we usually call it "commercial capitalism." In such a system goods are conveyed from ares where they are more common (and therefore cheaper) to areas where they are less common (and therefore less cheap). This process leads to regional specialization and to division of labor, both in agricultural production and in handicrafts.
Carroll Quigley