The utopian socialism of Charles Fourier spread throughout Europe in the mid-nineteenth century, but it was in the United States that it generated the most intense excitement. In this rich and engaging narrative, Carl J. Guarneri traces the American Fourierist movement from its roots in the religious, social, and economic upheavals of the 1830s, through its bold communal experiments of the 1840s, to its lingering twilight after the Civil War.