At the risk of terrible understatement, it's pretty clear that the Southern Agrarians did not have a huge impact on the political climate of their era (primarily the 1930s). However, while their political success was small, the ripples of their intellectual impact continue to be felt today. And so while parts of this book, one of the most articulate presentations of the agrarian position, are somewhat dated, there's still a lot of value for modern readers.
The book got off to a slow start for me. Davidson's presentation of the theory and history of American regionalism, in a section titled "The Nation We Are," is important, but much of it summarizes, or reacts to, the work of historians and sociologists now even more obscure than the Agrarians themselves (Frederick Jackson Turner being a notable exception). While Davidson makes important points about the endogenous or organic nature of regions, regional characteristics, and regional loyalties -- in distinction to the imposed, artificial, and largely arbitrary nature of political divisions like counties or states -- his focus on the social science of the 1930s is not a terrifically compelling read today.
Once we get past that first section, though, the reading is much, much more rewarding. This is particularly true of the second section, titled "Immovable Bodies and Irresistible Forces," which focuses on defining the characteristics of various American regions and the people who live there. I especially enjoyed "Still Rebels, Still Yankees," which contrasts Brother Jonathan of Yankeetown, Vermont, with Cousin Roderick of Rebelville, Georgia. "The Two Old Wests," an exploration of how frontier, geographic, and cultural influences blended, with very different results, in the Old Southwest (Tennessee, Alabama, Mississippi, and later Texas) and Old Northwest (Ohio, Michigan, Illinois, and other parts of the modern "Midwest"), was fascinating. And "The Great Plains," a précis of Walter Prescott Webb's important book of the same title with Davidson's own expanded commentary, extends the analysis to the foothills of the Rockies. As a Seattleite, I would have liked to have seen Davidson carry his discussion all the way to the Pacific coast, but I can't complain about what he did do.
Entertaining and valuable as all this is, the most useful section for modern students of politics and regionalism might be the chapter titled "Expedients vs. Principles -- Cross-Purposes in the South." Davidson here makes a number of important, and still timely, points, including illustrating how attacks on the "backward" South are frequently Trojan horses for the imposition of another, usually Northeastern, political or social agenda. The author also argues, contra those who say the Constitution and federalist system are outdated because "the Founders couldn't foresee" the nature of modern society, that indeed, Jefferson and his contemporaries did foresee the coming of large-scale industrialism and the destructive effects it would have on agrarian society.
Reading Davidson today, one can't help but wonder whether things are much worse, or perhaps a little better, than during his day. One the one hand, monopoly industrialism has in some senses given way to the "new economy" driven by high technology. On the other hand, American culture is more monolithic than ever, thanks to mass media and popular culture that are far more pervasive and homogenizing than in the '30s. Are there any discernable differences between Brother Jonathan's and Cousin Roderick's twenty-first century great-grandchildren? It's a question worth investigating, and Davidson's insights are as valuable and provocative today as they were nearly 70 years ago.