What is the theme in The Prize: The Epic Quest for Oil, Money, and Power by Daniel Yergin?

The hydrocarbon society is a major theme in this book. Hydrocarbons go far beyond the limited number of oil-based fuels sought by the pioneers of oil exploration in the 1850s. They looked to light their houses and businesses cheaply and safely; at the time, they used coal to heat and power their factories. Coal was modern society's most essential commodity. As the gasoline-fueled automobile caught on, the wider application of oil became apparent, and science increasingly improved the refining processes and applications. By the mid-1950s, coal coexisted with oil; soon oil began to prevail, and with the full array of plastics, synthetic fabrics, and other hydrocarbon products, the industrial world was converted into a "Hydrocarbon Society" and its inhabitants "Hydrocarbon Man." It was no longer possible to live comfortably without all that oil offered without returning to primitive way. The problem is that oil is a finite resource, no matter how vast it currently appears to be. Planning for a post-hydrocarbon age is essential but little practiced because of the costs and dislocations involved.