Agitation for free trade in the 1830s and 1840s crossed class boundaries and united both working and middle classes; the class-ridden historiography of nineteenth-century social movements, where the working class is part of the “history of socialism,” and the middle class of the “history of liberalism,” has entirely obscured this linkage between the classes.

Philip Mirowski & Dieter Plehwe (eds.), The Road from Mont Pèlerin, loc. 444