"Each sphere is regulated by customary or legislated rules, and each is defined by its own specification of ends and means, as these accord with the nature of the activity and its place in the whole society or culture. Each sphere develops methods of fulfilling its own standards, ways to mark accomplished goals, definitions of excellence, and standards for success. Each sphere may involve a host of organizations and practices—in economic life, for example, these practices range from the village market, to the partnership, to the family firm, to state-run factories, to the giant corporation, to the international financial market.