Abstract

Many seventeenth- and eighteenth-century philosophers of the Enlightenment, such as Hobbes, Spinoza, Locke, Shaftesbury, Hume, Voltaire, and Diderot, criticized religious doctrines not only because (or when) such doctrines comprised unfounded claims to knowledge, but also because they inspired fanaticism, ensuing in sectarian violence, persecution, torture, and war. In this paper, I attempt to reconstruct Kant’s position, as part of this Enlightenment project: he too repeatedly and pejoratively characterizes various forms of belief in or behavior guided by religious (or other) conceptions of the supersensible as “fanaticism” (Schwärmerei). By comparison to many Enlightenment figures, Kant’s understanding of the relation between the human presumption to knowledge of the supersensible and the deliverances of reason is more sympathetic to the claims of religious belief and more qualified in advocating the corrective power of reason against it. I argue that Kant’s conception of fanaticism – its origins, motivations, and the nature of its error – reflects this more qualified endorsement of reason. I suggest that by contrast to many of his predecessors and contemporaries Kant does not treat fanaticism as expressing or originating wholly from sensible emotions or interests, opposed to and “overpowering” reason. Rather, though sensibility (including emotional sensibility) is central to his account of fanaticism, Kant holds that the problematic fanatical stance incorporates and depends on rational projections or aspirations, particularly those of practical reason. Moreover, Kant’s distinction between theoretical and practical reason generates an interesting, dual account of fanaticism: theoretical fanaticism, a kind of cognitive error, and practical fanaticism, a specifically practical error in our relation to the supersensible.