Parfit, the Reductionist View, and Moral Commitment

Abstract

In Reasons and Persons, Derek Parfit argues for a Reductionist View of personal identity. According to a Reductionist, persons are nothing over and above the existence of certain mental and/or physical states and their various relations. Given this, Parfit believes that facts about personal identity just consist in more particular facts concerning psychological continuity and/or connectedness, and thus that personal identity can be reduced to this continuity and/or connectedness. Parfit is aware that his view of personal identity is contrary to what many people ordinarily think about persons, and thus if his view is correct, many of us have false beliefs about personal identity. Further, since many of our views about morality are based upon our views about personal identity, it follows that we may also have to change our beliefs about morality as well. Parfit, however, thinks that in many cases such changes represent an improvement over our former beliefs and better fit with our considered moral judgments. But instead, I argue that Parfit’s account poses a serious threat to considered moral judgments, and, in particular, that it seriously undermines any substantial notion of moral commitment. As such, even if Parfit is metaphysically correct, I suggest we may have practical reasons, based on our moral concerns, for holding to a more weighty view of the nature of persons.