Mental illness, motivation and moral commitment

I present a dilemma which depressive behavioral pathology poses for both Humean and non-Humean theories of motivation and value. Although the dilemma shows that neither theory can be considered adequate in its standard form, I argue that if the Humean theory is modified so as to embrace a richer notion of satisfaction than it currently does, it can solve the problem which depression poses for it and, thus, the dilemma can be avoided. Embracing a richer notion of satisfaction not only solves this problem, it also extends the scope of the Humean theory in a potentially dramatic way, by extending the explanatory reach of moral psychology to issues often thought to fall outside its scope, namely, issues in moral psychopathology