Humean externalism is the view that moral motivation must be explained in terms of desires that are “external” to an agent’s motivationally-inert moral judgments. A standard argument in favor of Humean externalism appeals to the possibility of amoral or morally cynical agents—agents for whom moral considerations gain no motivational traction. The possibility of such agents seems to provide evidence for both the claim that moral judgments are themselves motivationally inert, and the claim that moral motivation has its source in desires (...) external to those judgments. This essay makes the case that, rather than providing a compelling argument in favor of Humean externalism, the argument from amoralism can be recast to set up an important challenge to this view. On one hand, it appears that the central methodological considerations and types of evidence that undergird the externalist argument from amoralism are in tension with a central Humean commitment: namely, that desires can be sources of motivation. While it is possible for Humeans to escape this horn of the dilemma, the most plausible strategies for doing so can be co-opted by internalists to resist the argument’s externalist conclusion. (shrink)

Proceedings of the Aristotelian Society, Volume 115, Issue 3pt3, Page 255-276, December 2015.

Our beliefs about which actions we ought to perform clearly have an effect on what we do. But so-called “Humean” theories—holding that all motivation has its source in desire—insist on connecting such beliefs with an antecedent motive. Rationalists, on the other hand, allow normative beliefs a more independent role. I argue in favor of the rationalist view in two stages. First, I show that the Humean theory rules out some of the ways we ordinarily explain actions. This shifts the burden (...) of proof onto Humeans to motivate their more restrictive, revisionary account. Second, I show that they are unlikely to discharge this burden because the key arguments in favor of the Humean theory fail. I focus on some of the most potent and most recent lines of argument, which appeal to either parsimony, the teleological nature of motivation, or the structure of practical reasoning. (shrink)

Much in contemporary metaethics revolves around the two positions known as ‘motivational internalism’ and the ‘Humean theory of motivation’. The importance of these positions is mostly due to their role in what is considered to be the most powerful argument for metaethical non-cognitivism: the so-called ‘motivation argument’. In my paper, I want to argue that widely accepted renditions of the MA, such as the rendition recently forwarded by Russ Shafer-Landau, are flawed in two senses. First, they fail to sufficiently distinguish (...) between conceptual claims and empirical psychological claims, thereby somewhat obscuring the status of the argument and its conclusion. Secondly, they start from definitions of motivational internalism that are, in crucial respects, too strong. Motivational internalism is usually formulated as the claim that moral judgements necessarily motivate; as I want to argue, however, the claim that moral judgements potentially motivate is all the motivational internalism a noncognitivist defender of the MA is ever going to need. (shrink)