Abstract

It is a well-worn, yet astonishingly resilient, cliché that the Enlightenment was the “Age of Reason”. By focusing on Diderot and Helvétius this paper shows that, rather than proceeding in the name of reason, key figures within the progressive philosophy of the French Enlightenment were in fact extremely suspicious of abstract reasoning and attempted to construct a philosophy which purged the faculty of reason entirely from its philosophical anthropology and reduced the mind’s functions to the single faculty of sensation and so to the passions. It is in this sense that philosophy of the French Enlightenment attempted to produce a philosophy without reason. This paper reconstructs this attempt. In doing so it again engages critically with the idea that the philosophy of the Enlightenment was dogmatically rationalist, it provides a historical case study of a period in which philosophy pushed against the limits of its own identity, and it uses this attempt to reflect on the mythological not historiographical service which the cliché of Enlightenment Reason plays for the philosophical identity.