Though Greece is traditionally seen as an agrarian society, cattle were essential to Greek communal life, through religious sacrifice and dietary consumption. Cattle were also pivotal in mythology: gods and heroes stole cattle, expected sacrifices of cattle, and punished those who failed to provide them. "The Cattle of the Sun" ranges over a wealth of sources, both textual and archaeological, to explore why these animals mattered to the Greeks, how they came to be a key element in Greek thought and behavior, and how the Greeks exploited the symbolic value of cattle as a way of structuring social and economic relations.

Jeremy McInerney explains that cattle's importance began with domestication and pastoralism: cattle were nurtured, bred, killed, and eaten. Practically useful and symbolically potent, cattle became social capital to be exchanged, offered to the gods, or consumed collectively. This circulation of cattle wealth structured Greek society, since dedication to the gods, sacrifice, and feasting constituted the most basic institutions of Greek life. McInerney shows that cattle contributed to the growth of sanctuaries in the Greek city-states, as well as to changes in the economic practices of the Greeks, from the Iron Age through the classical period, as a monetized, market economy developed from an earlier economy of barter and exchange.

Combining a broad theoretical approach with a careful reading of sources, "The Cattle of the Sun" illustrates the significant position that cattle held in the culture and experiences of the Greeks.

Independent city-states (poleis) such as Athens have been viewed traditionally as the most advanced stage of state formation in ancient Greece. By contrast, this pioneering book argues that for some Greeks the ethnos, a regionally based ethnic group, and the koinon, or regional confederation, were equally valid units of social and political life and that these ethnic identities were astonishingly durable.

Jeremy McInerney sets his study in Phokis, a region in central Greece dominated by Mount Parnassos that shared a border with the panhellenic sanctuary at Delphi. He explores how ecological conditions, land use, and external factors such as invasion contributed to the formation of a Phokian territory. Then, drawing on numerous interdisciplinary sources, he traces the history of the region from the Archaic age down to the Roman period. McInerney shows how shared myths, hero cults, and military alliances created an ethnic identity that held the region together over centuries, despite repeated invasions. He concludes that the Phokian koinon survived because it was founded ultimately on the tenacity of the smaller communities of Greece.