Stephen Howard

This paper examines Jean le Rond d’Alembert’s views of metaphysical cosmology and argues that these constitute an important context for Kant’s critical-period response to rational cosmology. D’Alembert is commonly taken to have dismissed cosmology from the roster of the legitimate sciences, and there is indeed evidence of his scepticism towards Maupertuis’ cosmology no less than towards Wolff’s cosmologia generalis. I argue, however, that a broadly Leibnizian cosmological perspective underpins d’Alembert’s accounts of our knowledge and of the task of the philosopher. D’Alembert’s work thus anticipates and helps bring into focus Kant’s own nuanced engagement with the cosmological tradition.

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:The Fiery Test of Critique: A Reading of Kant's Dialectic by Ian ProopsStephen HowardIan Proops. The Fiery Test of Critique: A Reading of Kant's Dialectic. Oxford: Oxford University Press, 2021. Pp. 512. Hardback, $105.00.Ian Proops's book is a substantial contribution to the thriving field of Anglophone scholarship on the Transcendental Dialectic of Kant's Critique of Pure Reason. Across five hundred pages, Proops examines the whole of the Dialectic. The book is divided into three parts, following the disciplines of previous special metaphysics with which Kant critically engages in the Dialectic: rational psychology, cosmology, and theology. Discussions of transcendental illusion and the regulative use of ideas of reason are slotted into the rational psychology and theology parts, respectively.Methodologically, Proops aims to take a middle course between historical and reconstructive approaches (31–32). In historical and reconstructive modes alike, though, Proops is primarily concerned with accurately presenting and rigorously evaluating Kant's arguments in the Dialectic. These arguments come in two forms: either those of the imagined rational psychologist, cosmologist, or theologian, whom Kant ventriloquizes in order to reveal their errors; or those arguments that Kant makes in his own voice. The Fiery Test of Critique distinguishes itself from existing studies through the detail and care with which these arguments are scrutinized. Specialists will find numerous illuminating exegeses and links to a wide range of Kant's published and unpublished writings. Proops does not hesitate to identify where, in his view, Kant's arguments fail (or where those of Kant's ventriloquized metaphysicians fail in a way Kant does not intend), but he endeavors to interpret charitably and to make his own evaluative criteria explicit.The wide-ranging introduction to the book offers intriguing reflections on a metaphor Kant uses for his critique of pure reason: a "fiery test" (8; A 406/B 433). This test, Proops suggests, is best understood not as a religious ordeal by fire but as a "metallurgical assay": the testing of a coin or an ore to determine its precious metal content (9–10). This means that the test of critique "is not pass-fail" (12). Kantian critique identifies some precious metal to be retained alongside the dross (the base-metal bearer) to be discarded. The "gold" [End Page 525] and "silver" found by Kant's fiery test are, Proops contends, respectively the indirect proof of transcendental idealism that emerges from the Antinomy chapter, and the doctrinal beliefs in God and an afterlife that remain after the Paralogism and Ideal (13, 453–54).This application of Kant's metaphor indicates how far Proops diverges from the dismissive views of older Anglo-American studies of the Dialectic (the paradigm being Bennett's Kant's Dialectic [Cambridge: Cambridge University Press, 1974]). Proops's opening questions and goals show that he aims to clarify the precise character of the dogmatic metaphysical claims criticized by Kant, and to identify what of this previous tradition Kant considers worth saving and why (2–7). This focus on the positive contribution of the Dialectic to Kant's philosophy—an approach Proops shares with other recent commentators—is very welcome.For all his illuminating discussion of Kant's Feuerprobe imagery, Proops neglects to note that Kant does not simply identify worthwhile aspects of previous special metaphysics. Rather, the philosophical findings that Proops takes to be the precious results of the critical test are significantly developed in Kant's hands. That is, no pre-Kantian rational cosmologist claims that their debates provide an indirect proof of transcendental idealism (of course). Neither do pre-Kantian rational psychologists or theologians make Kant's move of conceiving of God and the immortal soul as matters of doctrinal belief, where the latter is an epistemic attitude distinct from knowledge and cognition. In the cases that Proops highlights, then, the relevant image seems to be not only a metallurgical test but also an alchemical transformation of previous metaphysical doctrines into positive "critical" results.The parts of the book on the Paralogisms and the Ideal, on which Proops has previously published, will no doubt stimulate further detailed debate among specialists. I leave these debates aside to consider the part of the...