題目 1 · AO1 Knowledge and Understanding Essay
20 分1(a) Outline dualist and materialist understandings of the relationship between body and soul, and their implications for belief in life after death. [20]
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解題
Dualism holds that a human being consists of two fundamentally distinct kinds of substance: a physical body and an immaterial soul or mind, with the soul constituting the true, essential self. This view has deep philosophical roots in Plato, whose analogy of the cave presents the physical, sensory world as a realm of mere shadows compared with the true reality of the eternal Forms, which the soul, trapped within the body, can access only imperfectly through reason; Plato held the soul to be immortal, pre-existing the body and capable of surviving its death, since the soul's true nature belongs to the eternal, unchanging realm of the Forms rather than to the changing physical world. This dualist framework was developed with particular philosophical rigour by Descartes, who argued that mind (a thinking, non-extended substance) and body (an extended, non-thinking substance) are genuinely distinct substances, interacting causally (Descartes controversially proposed the pineal gland as the point of interaction) but not reducible to one another. Christian theology has drawn substantially on this dualist framework, since it provides a natural philosophical basis for belief that the soul, as the immaterial essence of the person, can survive the death and decay of the physical body, awaiting either an intermediate state or ultimate bodily resurrection and reunion, as classically expressed in Christian eschatology.
Materialist (or physicalist) positions reject this substance dualism, holding instead that there is only one fundamental kind of substance — the physical — and that mental states, including whatever we mean by 'soul' or 'mind', are not a separate, immaterial substance but are identical to, reducible to, or straightforwardly dependent upon physical states of the brain and nervous system. The identity thesis, associated with philosophers such as Place and Smart, holds that mental states literally are identical to particular brain states (a specific thought or sensation simply is a specific pattern of neural activity, in the same way that 'water' turned out to be identical to H₂O). Philosophical behaviourism, associated with Gilbert Ryle's famous critique of Cartesian dualism as positing a 'ghost in the machine', instead analyses mental states as dispositions to behave in particular observable ways, denying any need to posit an inner, immaterial substance at all. Epiphenomenalism occupies an intermediate position, holding that mental states are genuinely produced by physical brain processes but are themselves causally inert byproducts, unable to have any independent causal effect back upon the physical body or world.
The implications of these positions for belief in life after death are stark and sharply opposed. If dualism is correct, and the soul genuinely is a distinct, immaterial substance not dependent for its existence on the continued functioning of the physical brain, then survival of bodily death is at least philosophically coherent, since the destruction of the body need not entail the destruction of the soul itself. If, by contrast, materialism is correct, and mental states/the 'soul' are simply identical to or entirely dependent upon physical brain states, then the permanent cessation of brain function at death would appear to entail the permanent cessation of the person as a conscious, thinking being, since there would be no separate substance capable of persisting once its physical basis has ceased to exist; on a materialist view, survival of death becomes coherent only if reconceived specifically as bodily resurrection — the recreation of a new physical embodiment of the person by God — rather than as the persistence of an immaterial soul independent of any body.
Final answer: dualism (Plato, Descartes) holds body and soul are distinct substances, making survival of bodily death through the soul's persistence philosophically coherent and underpinning traditional Christian belief in the soul's immortality; materialism (the identity thesis, behaviourism, epiphenomenalism) holds mind/soul is identical to or dependent upon physical brain states, implying that death ends the person as a conscious being unless survival is reconceived specifically as bodily resurrection rather than as the persistence of an immaterial soul.
Materialist (or physicalist) positions reject this substance dualism, holding instead that there is only one fundamental kind of substance — the physical — and that mental states, including whatever we mean by 'soul' or 'mind', are not a separate, immaterial substance but are identical to, reducible to, or straightforwardly dependent upon physical states of the brain and nervous system. The identity thesis, associated with philosophers such as Place and Smart, holds that mental states literally are identical to particular brain states (a specific thought or sensation simply is a specific pattern of neural activity, in the same way that 'water' turned out to be identical to H₂O). Philosophical behaviourism, associated with Gilbert Ryle's famous critique of Cartesian dualism as positing a 'ghost in the machine', instead analyses mental states as dispositions to behave in particular observable ways, denying any need to posit an inner, immaterial substance at all. Epiphenomenalism occupies an intermediate position, holding that mental states are genuinely produced by physical brain processes but are themselves causally inert byproducts, unable to have any independent causal effect back upon the physical body or world.
The implications of these positions for belief in life after death are stark and sharply opposed. If dualism is correct, and the soul genuinely is a distinct, immaterial substance not dependent for its existence on the continued functioning of the physical brain, then survival of bodily death is at least philosophically coherent, since the destruction of the body need not entail the destruction of the soul itself. If, by contrast, materialism is correct, and mental states/the 'soul' are simply identical to or entirely dependent upon physical brain states, then the permanent cessation of brain function at death would appear to entail the permanent cessation of the person as a conscious, thinking being, since there would be no separate substance capable of persisting once its physical basis has ceased to exist; on a materialist view, survival of death becomes coherent only if reconceived specifically as bodily resurrection — the recreation of a new physical embodiment of the person by God — rather than as the persistence of an immaterial soul independent of any body.
Final answer: dualism (Plato, Descartes) holds body and soul are distinct substances, making survival of bodily death through the soul's persistence philosophically coherent and underpinning traditional Christian belief in the soul's immortality; materialism (the identity thesis, behaviourism, epiphenomenalism) holds mind/soul is identical to or dependent upon physical brain states, implying that death ends the person as a conscious being unless survival is reconceived specifically as bodily resurrection rather than as the persistence of an immaterial soul.
評分準則
4-level mark scheme (20 marks, AO1). Level 1 (1–5): basic, fragmented knowledge with little accurate detail or named thinkers. Level 2 (6–10): a satisfactory outline of dualism and/or materialism with limited depth or reference to named philosophers. Level 3 (11–15): a good, accurate outline of both dualism (e.g. Plato, Descartes) and materialism (e.g. identity thesis or behaviourism), with clear implications drawn for the afterlife question. Level 4 (16–20): a comprehensive, precise outline covering multiple named thinkers/positions on both sides (Plato's cave, Descartes, identity thesis, behaviourism, epiphenomenalism) with confident specialist terminology and clearly, accurately drawn implications for belief in life after death. Max 20 marks.