The paper takes a close look at Derek Parfit’s example of the Nineteenth Century Russian in 'Reasons and Persons'. Parfit presents it as an example which illustrates the moral consequences of adopting his reductionist view of personal identity in a positive light. I argue that things turn out to be more complex than he envisages, and that it might be far more difficult to live in his world than he allows.

Eliminative materialism is the thesis that our common-sense conception of psychological phenomena constitutes a radically false theory, a theory so fundamentally defective that both the principles and the ontology of that theory will eventually be displaced, rather than smoothly reduced, by completed neuroscience. Our mutual understanding and even our introspection may then be reconstituted within the conceptual framework of completed neuroscience, a theory we may expect to be more powerful by far than the common-sense psychology it displaces, and more substantially (...) integrated within physical science generally. My purpose in this paper is to explore these projections, especially as they bear on (1) the principal elements of common-sense psychology: the propositional attitudes (beliefs, desires, etc.), and (2) the conception of rationality in which these elements figure. (shrink)

Most people believe that extraterrestrial beings or porpoises or computers could someday be recognized as persons. Given the significant constitutional differences between these entities and ourselves, the general assumption appears to be that ‘person’ is not a natural kind term. David Wiggins offers an illuminating challenge to this popular dogma in ‘Locke, Butler and the Stream of Consciousness: and Men as a Natural Kind’. Wiggins does not claim that ‘person’ actually is a natural kind term; but he argues hard for (...) the advantages of regarding it as something like a natural kind classification. The problem is that, whatever its merits, there are obvious and fatal objections to the view that person is a natural kind. My aim is to present a modification of the natural kind thesis which avoids these objections and retains the attractions of the basic position. (shrink)