Upends entrenched thinking about cities, demonstrating how urban economies are defined—or constrained—by the fiscal imagination of policymakers, activists, and residents.   Many local policymakers make decisions based on a deep-seated belief: what’s good for the rich is good for cities. Convinced that local finances depend on attracting wealthy firms and residents, municipal governments lavish public subsidies on their behalf. Whatever form this strategy takes—tax-exempt apartments, corporate incentives, debt-financed mega projects—its rationale remains consistent and assumed to be true. But this wasn’t always the case. Between the 1870s and the 1970s, a wide range of activists, citizens, and intellectuals in New York City connected local fiscal crises to the greed and waste of the rich. These figures saw other routes to development, possibilities rooted in alternate ideas about what was fiscally viable.   In The Menace of Prosperity, Daniel Wortel-London argues that urban economics and politics are shaped by what he terms the “fiscal imagination” of policymakers, activists, advocates, and other figures. His survey of New York City during a period of explosive growth shows how residents went beyond the limits of redistributive liberalism to imagine how their communities could become economically viable without the largesse of the wealthy. Their strategies—which included cooperatives, public housing, land-value taxation, public utilities, and more—centered the needs and capabilities of ordinary residents as the basis for local economies that were both prosperous and just.   Overturning stale axioms about economic policy, The Menace of Prosperity shows that not all growth is productive for cities. Wortel-London’s ambitious history demonstrates the range of options we’ve abandoned and hints at the economic frameworks we could still realize—and the more democratic cities that might result.