Abstract

The philosophy of action is about agents and actions. As such, it has both a metaphysical and an ethical dimension. My dissertation is divided into three papers. ;The first is wholly metaphysical, concentrating on the ontology of actions. I explore the relationship between actions reported by a certain class of "by" -sentences and argue that the relationship is identity. ;The second paper concerns the bearing that ontological conclusions about actions have on ethics. I argue that, except for the claim that there are no such entities as actions, ontological conclusions about actions do not make a substantive difference to ethical theory. ;In the third paper, I concentrate on the ethical issue of an agent's responsibility for her actions. I argue that an agent is responsible only if she could have done otherwise, as long as "could have done otherwise" is interpreted as meaning "would have done otherwise if she had so chosen."