Faced with the scientific and rationalist optimism of the unity of science movement as well as much of Marxism, early neoliberals demarcated and defended a liberal science against progressive scientists who promoted science as the midwife of social change. Crucially, they developed a new theory of knowledge-in-society which fused together philosophy of science and political economy into a single set of hypotheses. In these debates, concerns about the role of science in society linked up with the most pressing political question of the day: the rise of fascism and totalitarianism.

Dieter Plehwe, Quinn Slobodian & Philip Mirowski (eds.), Nine Lives of Neoliberalism, loc. 53