It is not enough to say, Jennifer Mensch argues, that, in addition to his more familiar interest in reconciling Newtonian physics and Leibnizian metaphysics, Kant nurtured an abiding awareness of the life sciences of his day. These were not inert, isolated interests, but productively interrelated moments of a broader view. Indeed, the connection between Kant's understanding of the nature of cognition and the nature of organic generation is so thoroughgoing, Mensch claims in the final chapter of the book, that getting to the bottom of the central sections of the Critique of Pure Reason demands reflection on the significance of Kant's pervasive employment of organicist language.1Mensch's claim is not primarily literary, though Kant's Organicism does evince a remarkable sensitivity to the philosophical water carried by rhetorical and linguistic choices. It's not simply that Kant wraps his understanding of reason, cognition, and the mind in organic metaphors. Rather, Kant's regular participation in debates central to the incipient life sciences provided the intellectual parameters within which he first formulated his now-famous questions regarding the possibility of pure cognition and then develops powerful conceptual resources to respond to those questions. As Mensch writes, Kant prepared to borrow freely from the models and vocabulary of the embryological debates then underway. Indeed . . . it was these models that would eventually help Kant discover the origin of knowledge itself.2A central moment in Mensch's reconstruction illustrates this point nicely. In his 1770 Dissertation, Kant distinguishes between sensible and intellectual concepts. Sensible concepts are abstracted from sense experience. Intellectual concepts, Kant argued in 1770, cannot be innate, but neither can they be gleaned from sense experience. They are instead the product of an original acquisition. Just what this original acquisition amounts to, though, remains unclear in the Dissertation. No matter, for Mensch points us to a series of notes written between 1769 and 1776, showing that Kant had come in the first half of the 1770s to see that his understanding of the original acquisition of intellectual concepts-what would become the pure concepts of the understanding in the Critique-was intimately connected to his reflections on epigenesis. Crusius explains the real principle of reason on the basis of [preformationism], Kant writes, Locke on the basis of [physical influx] like [Aristotle]; Plato and Malebranche, from [intellectual intuition]; we, on the basis of epigenesis from the use of the natural laws of reason3 The connections Kant established between his work on the origin of concepts and the biological theories of generation effectively resolved the earlier problem and ushered in the even more vexing problem of the connection between representations of different origins. This new problem, the problem of the deductions, would in time, Mensch argues, also find its answer in Kant's organic model of the mind.Mensch's book has convinced me that the development of Kant's thinking about the nature and limits of cognition in the 1760s and 1770s was deeply informed by his understanding of debates in the life sciences during that period. What I would like to explore is the question of just how deeply into the critical philosophy Kant's organicism penetrates. To what degree can the intellectual context in which Kant came to articulate his critical philosophy be separated from the critical philosophy itself? How tightly bound to the details of eighteenth-century conceptions of organic unity and development are the core concepts of Kantian transcendental philosophy? And what does Mensch's excavation of the context of discovery of transcendental philosophy imply for current efforts to marry Kantian insights to contemporary interests and commitments?4 To my mind, all of this turns on how we are to understand the character of the contribution Kant's thinking about the life sciences makes to the more familiar doctrines and strategies of transcendental idealism. …
Read full abstract