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Persons and the Unity of Consciousness

William Hasker

The Waning of Materialism March 25, 2010 DOI: 10.1093/acprof:oso/9780199556182.003.0008 (opens in new tab)

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AI-extracted from the abstract
Characteristics Theoretical or philosophical paper Peer reviewed
Key points Argues that the unity of consciousness argument from Leibniz and Kant is not inconsistent with empirical evidence of disunity from commissurotomy and multiple personality syndrome, and that this combination undermines both materialism and Cartesian dualism.

Abstract

AbstractWe have a conception of the human person as constituted in part by a self, a unified, coherent center of consciousness which is a rational agent, capable of being responsive, and responsible, to other agents. There are, however, empirical phenomena — in particular, commissurotomy and multiple personality syndrome — that seem to threaten this unity both theoretically and practically. As a counterpoise to these phenomena, this chapter puts forward the unity of consciousness argument, deriving from Leibniz and Kant. While this argument might seem to conflict with the empirical evidence of disunity, the chapter maintains that there is no inconsistency between the evidence and the argument. The combination of the two, in fact, both places a barrier in the way of a materialist account of mind and consciousness, and at the same time points out a severe difficulty for standard (especially Cartesian) varieties of dualism. The chapter closes by sketching out my own preferred view of the metaphysics of persons, emergent dualism.