I show how Sir William Rowan Hamilton’s philosophical commitments led him to a causal interpretation of classical mechanics. I argue that Hamilton’s metaphysics of causation was injected into his dynamics by way of a causal interpretation of force. I then detail how forces are indispensable to both Hamilton’s formulation of classical mechanics and what we now call Hamiltonian mechanics (i.e., the modern formulation). On this point, my efforts primarily consist of showing that the contemporary orthodox interpretation of potential energy is (...) the interpretation found in Hamilton’s work. Hamilton called the potential energy function the “force-function” because he believed that it represents forces at work in the world. Various non-historical arguments for this orthodox interpretation of potential energy are provided, and matters are concluded by showing that in classical Hamiltonian mechanics, facts about the potential energies of systems are grounded in facts about forces. Thus, if one can tolerate the view that forces are causes of motion, then Hamilton provides one with a road map for transporting causation into one of the most mathematically sophisticated formulations of classical mechanics, viz., Hamiltonian mechanics. (shrink)

Unity is a central concept in the Critique of Pure Reason, since it is only through the unifying act of our spontaneous faculties that an experience can emerge, according to Kant. However, the faculty of reason brings forth a different unity than that of the understanding: Kant characterizes the former as a collective unity, while the latter as a distributive unity. This article aims to explain the meaning of these terms, with reference to the Nachlass on metaphysics and the writings (...) on right where Kant employs them in a clearer manner. This explanation can provide a basis to understand the difference between the faculty of understanding and the faculty of reason within the first Critique, a difference rather neglected by scholars, who have focused mainly on Kant’s distinction between sensibility and understanding. (shrink)

Over the last two decades, Kant’s name has become closely associated with the “constitutivist” program within metaethics. But is Kant best read as pursuing a constitutivist approach to meta- normative questions? And if so, in what sense? In this essay, I’ll argue that we can best answer these questions by considering them in the context of a broader issue – namely, how Kant understands the proper methodology for philosophy in general. The result of this investigation will be that, while Kant (...) can indeed be read as a sort of constitutivist, his constitutivism is ultimately just one instance of a much more general approach to philosophy – which treats as fundamental our basic, self-conscious rational capacities. Thus, to truly understand why and how Kant is a constitutivist, we need to consider this question within the context of his more fundamental commitment to “capacities-first philosophy”. (shrink)

Kant holds that the applicability of the moral ‘ought’ depends on a kind of agent-causal freedom that is incompatible with the deterministic structure of phenomenal nature. I argue that Kant understands this determinism to threaten not just morality but the very possibility of our status as rational beings. Rational beings exemplify “cognitive control” in all of their actions, including not just rational willing and the formation of doxastic attitudes, but also more basic cognitive acts such as judging, conceptualizing, and synthesizing.

Kant’s Naturrecht Feyerabend has recently gained more sustained attention for its role in clarifying Kant’s published positions in political philosophy. However, too little attention has been given to the lecture’s relation to Gottfried Achenwall, whose book was the textbook for the course. In this paper, I will examine how Kant rejected and transforms Achenwall’s natural law system in the Feyerabend Lectures. Specifically, I will argue that Kant problematizes Achenwall’s foundational notion of a divine juridical state which opens up a normative (...) gap between objective law and subjective rights. In the absence of a divine sovereign, formal natural law is unable to justify subjective natural rights in the state of nature. In the Feyerabend Lectures, Kant, in order to close this gap, replaces the divine will with the “will of society”, making the state necessary for the possibility of rights. (shrink)

What is the highest good actually good for in Kant’s third Critique? While there are well-worked out answers to this question in the literature that focus on the highest good’s practical importance, this paper argues that there is an important function for the highest good that has to do exclusively with contemplation. This important function becomes clear once one notices that coherent [konsequent] thinking, for Kant, was synonymous with "bündiges" thinking, and that both are connected with the highest good in (...) the third Critique’s moral proof for God’s existence. I show that the original meaning of "bündig," which is from the carpentry trade and has been forgotten, illuminates the stakes of the highest good in Kant’s system. For us, as proverbial carpenters of reason, coherence is essential for the intellectual activity of constructing a philosophical worldview in his transcendental idealism. I motivate the reading further by showing how this function can neatly reconstruct Kant’s proof for God’s existence in the third Critique. I conclude by sketching Kant’s reasons for why the project of creating a coherent worldview grounded in the highest good is worth the labor costs. (shrink)

Kant’s claim that we must postulate the immortality of the soul is polarizing. While much attention has been paid to two standard arguments in its defense (one moral-psychological, the other rational), I contend that a favorite argument of Kant’s from the apogee of his critical period, namely, the teleological argument, deserves renewed attention. This paper reconstructs it and exhibits what makes it unique (though not necessarily superior) in relation to the other arguments. In particular, its form (as third-personal or descriptive, (...) beginning from observations) and related force of assent (as a subjectively universal reflective judgment) set it apart from the other arguments. My goal is to establish that any engagement with Kant’s immortality postulate must include equal consideration of the teleological argument in order to be complete. (shrink)