In a famous passage from the Philosophical Investigations, Wittgenstein describes a pupil who has been learning to write out various sequences of numbers in response to orders such as “+1” (for the natural numbers) and “+2” (for the series 0, 2, 4, 6, 8…). He has shown himself competent for numbers up to 1000, but when we have him continue the “+2” sequence beyond 1000, he writes the numerals 1004, 1008, 1012. As Wittgenstein describes the case:

It is has been argued that there is a problem with moral testimony: testimony is deferential, and basing judgments and actions on deferentially acquired knowledge prevents them from having moral worth. What morality perhaps requires of us, then, is that we understand why a proposition is true, but this is something that cannot be acquired through testimony. I argue here that testimony can be both deferential as well as cooperative, and that one can acquire moral understanding through cooperative testimony. The problem of moral testimony is thus not a problem with testimony generally, but a problem of deferential testimony specifically.

The possibility of error conditions the possibility of normative principles. I argue that extant interpretations of this condition undermine the possibility of normative principles for our action because they implicitly treat error as a perfection of an action. I then explain how a constitutivist metaphysics of capacities explains why error is an imperfection of an action. Finally, I describe and defend the interpretation of the error condition which follows.

The metaphysical “Law of Continuity of Alterations” (“LCA”) says that whenever an object alters from one state to another, it passes through a continuum of intermediate states. Kant treated LCA as a transcendental law of understanding. The primary purpose of the paper is to reconstruct and evaluate Kant’s three arguments for LCA. All three are found to be inadequate. However, a secondary goal of the paper is to show that LCA would have more naturally been construed as a regulative principle of reason (rather than a law of understanding). I conclude with some remarks about how this could work.

This paper mounts a partial defense of the basic structure objection to the egalitarian criticism of productive incentives. The defense is based on the claim that some duties of justice are subject to a reciprocity condition. The paper develops this position via an examination of the debate between Andrew Williams and G. A. Cohen on publicity and incentives. Reciprocity is an intrinsic feature of a relational conception of social justice, not simply a requirement of stability. Not all duties are conditional on reciprocity because some duties are owed to third parties, as well as to their primary targets. Some forms of exploitation may be unconditionally wrong, but not the specific kind of exploitation at stake when talented individuals accept market wages.

This paper examines Catharine Trotter Cockburn’s moral philosophy, focusing on her accounts of virtuous conduct, conscience, obligation, and moral character. I argue that Cockburn’s account of virtue has two interlocking parts: a view of what virtue requires of us, and a view of how we come to see this requirement as authoritative. I then argue that while the two parts are ultimately in tension with one another, the tension is instructive. I use Cockburn’s encounter with Shaftesbury’s writings to help bring out this tension in her thought. I conclude that Cockburn’s work marks a bridge in modern moral philosophy from seventeenth-century natural law theory to the naturalism of the eighteenth century— that of Gay, Hume, and Bentham.

This article is interested in the general question of what justifies territorial rights over unoccupied places, including places that are not occupied but are situated within the territorial borders of a state. This question arises because one of the most common defenses of rights over territory makes use of the idea of occupancy and has difficulty explaining such rights in places that are not occupied. It explores this question through an examination of the claims and arguments in the Canadian Arctic, which provides an historically specific test case for the merits and plausibility of the various arguments appealed to. It argues that territorial rights in unoccupied places, including the Canadian Arctic, are justified on different grounds than in occupied parts of the territory, and that the justification also affects the kinds of rights—particularly over resources—that such states can claim.

Making sense of Kant’s claim that it is morally necessary for us to believe in the immortal soul is a historically fraught issue. Commentators typically reject it, or take one of two paths: they either restrict belief in the immortal soul to our subjective psychology, draining it of any substantive rational grounding; or make it out to be a rational necessity that morally interested beings must accept on pain of contradiction. Against these interpreters, I argue that on Kant’s view, belief in our immortality is necessary because it further determines and enriches the cognitive content contained in the concept of the highest good. Through this sharpened conceptual content, we acquire the resources to withstand theoretical skepticism about our moral vocation.

This paper offers a new interpretation of the young Spinoza’s method of distinguishing the true ideas from the false, which shows that his answer to the sceptic is not a failure. This method combines analysis and synthesis as follows: if we can say of the object of an idea (a) which simple things underlie it, (b) how it can be constructed out of simple elements, and (c) what properties it has after it has been produced, doubt concerning the object simply makes no sense. The paper also suggests a way in which this methodology connects to the ontology of the Ethics.