Modern philosophy has been vexed by the question "Why should I be moral?" and by doubts about the rational authority of moral virtue. In Reasons without Rationalism, Kieran Setiya shows that these doubts rest on a mistake. The "should" of practical reason cannot be understood apart from the virtues of character, including such moral virtues as justice and benevolence, and the considerations to which the virtues make one sensitive thereby count as reasons to act.

Proposing a new framework for debates about practical reason, Setiya argues that the only alternative to this...

Can we have objective knowledge of right and wrong, of how we should live and what there is reason to do? The thought that we can is beset by sceptical problems. In the face of radical disagreement, can we be sure that we are not deceived? If the facts are independent of what we think, is our reliability a mere coincidence? Can it be anything but luck when our beliefs are true? In Knowing Right From Wrong, Kieran Setiya confronts these questions in their most compelling and articulate forms: the argument from ethical disagreement; the argument from reliability and coincidence; and...

In the last forty years, action theory has revitalized moral philosophy. Philosophers have explored the nature of agency, what is involved in acting for a reason, how we know what we are doing, the role of intention, desire, and belief in motivating action, and more. At their most ambitious, philosophers have claimed that action theory is the foundation of ethics. For rationalists or constitutivists, the standards of practical reason derive from the nature of agency as a functional or teleological kind. They are no more mysterious than the standards for being a good clock or a good heart,...