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Critically Assess Descartes' Three Arguments for His Claim That Mind and Body Are Distinct.

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Critically Assess Descartes' Three Arguments for His Claim That Mind and Body Are Distinct.
Critically assess Descartes ' three arguments for his claim that mind and body are distinct.

The concept of Mind-Body dualism is one that has its roots in early classical philosophy, with both Plato and Aristotle setting out strong arguments for this philosophy of the mind. The most famous proponent of this theory though is the “father of Modern Philosophy”, René Descartes. This belief fundamentally stems from the appearance of humans having both mental and physical properties, properties which seem to be radically different. As a response to this Descartes proposed that these properties are contained within two radically different substances, res cogitans, or thinking substance, and res extensa, extended substance. This thinking substance is what makes up a mind and the extended substance a body. Within his Discourse on Method and the Meditations, Descartes outlines three arguments for this distinction between the mind and the body. These arguments, varying in their strength, have been analysed fervently since Descartes published them, and much philosophy of the mind centred on Descartes theses until the beginning of the last century and debate still remains today.
The first argument that Descartes sets out in his Meditations for mind body distinctness is what has become known as the doubting argument. This argument first appeared in the Discourse (Descartes, 1971, pp. 32) and he expanded upon it in the Meditations (Descartes, 1641, 2:6). Though the argument changed structure slightly between the two texts it can be broadly seen as:
P1- I can doubt that my body exists
P2- I cannot doubt that my mind exists
P3- Identical substances must have identical properties
C- My mind and body are different substances.

It should be noted before examining this argument further that the third premise is a general principle of Descartes’s employed in much philosophical discussion. This principle states that if something is true of X and not true of Y then they are



Bibliography: Blackburn, S., Think, Oxford University Press, Oxford, 1999 Chalmers, D., “Does Conceivability entail Possibility?”, Published in (T. Gendler & J. Hawthorne, eds) Conceivability and Possibility (Oxford University Press, 2002), pp.145-200.]] Descartes, R., Meditations on First Philosophy, 1641 Descartes, R., Philosophical Writings, translated and edited by E. Anscombe and P. T. Geach, (Indeanapolis: Bobbs-Merrill, 1971) Descartes, R., Arnauld, A., http://www.earlymoderntexts.com/pdf/descobje.pdf, pp. 56-57, retrieved: 27/03/2013 Gazzaniga, M. S., “Forty-five years of split-brain research and still going strong”, [Review], Nature Reviews Neuroscience, 6(8), 653-U651, 2005 Hatfield, G., Descartes and his Meditations, Routledge, 2003 Ryle, G., The Concept of Mind (1949); The University of Chicago Press edition, Chicago, 2002

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