John Heil

In his defence of the identity theory, Professor Smart has attempted to show that reports of mental states are strictly topic-neutral. If this were the case then it would follow that there is nothing logically wrong with the claim that the mind is the brain or that mental states are really nothing but brain states. Some phillosophers have argued that a fundamental objection to any form of materialism is that the latter makes an obvious logical blunder in identifying the mental with the physical. This is the view that dualism is enshrined in our language. If this is true then of course statements such as ‘the mind is actually nothing but the brain’ and ‘mental states are really nothing but physical processes’ would be quite unacceptable on strictly logical grounds. Smart's claim that talk about mental states is topic-neutral, however, appears to exempt materialism from such objections. The question is, does it? That is to say, are sensation reports and the like topic-neutral in the required sense? Are they analogous in principle to statements of the form ‘someone is in the room’? Smart's point is that expressions such as ‘someone phoned: it was the doctor’ are logically similar to those of the form ‘I am having a red after-image: it is a brain process.’ ‘Someone’ is not logically equivalent to ‘the doctor’ , but it may, of course, be true that the doctor is the someone who phoned. Does this analogy hold and is it correct to say that sensation reports and mentalistic expressions in general are topic-neutral, that they refer only to experienced ‘somethings’? Smart's claim runs as follows: When a person says, ‘I see a yellowish-orange after-image’, he is saying something like this: ‘ There is something going on which is like what is going on when I have my eyes open, am awake, and there is an orange illuminated in good light in front of me, that is, when I really see an orange’. Notice that the italicised words, namely ‘there is something going on which is like what is going on when’, are all quasi logical or topic neutral words. This explains why the ancient Greek peasant's reports about his sensations can be neutral between dualistic metaphysics and my materialistic metaphysics. It explains how sensations can be brain processes and yet how a man who reports them need know nothing about brain processes. For he reports them only very abstractly as ‘something going on which is like what is going on when…’ Similarly, a person may say ‘someone is in the room’, thus reporting truly that the doctor is in the room, even though he has never heard of doctors

ABSTRACTThe paper takes up a conception of substances according to which substances are simple property bearers, properties being modes, particular qualitative ways individual substances are. What a substance does or would do is determined by its qualities. Efficient causation is to be understood as the manifesting of powers possessed by substances owing to their qualitative natures. Although complexes, entities with substantial parts, are not substances, they would be no less real, no less participants in the causal fray. What the substances and properties are is an empirical matter, however, to be settled, if at all, by physics. For all we know, the substances might be particles, or fields, or the universe as a whole. Efficient causation appears to require pluralism: distinct interacting substances. In a non-pluralistic universe, causal truths would be relegated to the manifest image: true still, but made true by non-causal features of the universe perhaps revealed by the scientific image. There remains the final reflection, how shallow, puny, and imperfect are efforts to sound the depths in the nature of things. In philosophical discussion, the merest hint of dogmatic certainty as to finality of statement is an exhibition of folly. : x)

Peter van Inwagen’s Consequence Argument makes salient the difficulties facing attempts to reconcile determinism and agency. Others go further. Derk Pereboom, for instance, contends that science provides compelling evidence that no action is free, and Galen Strawson argues that conditions for genuinely free action are flatly unsatisfiable. Against such skepticism about free will, the paper introduces considerations in support of the idea that there are probably good reasons to think that conditions for free actions—real agency—are sometimes satisfied, that ascriptions of agency are sometimes true, but that truthmakers for these ascriptions could be wholly deterministic in a way that might seem to, but does not in fact, place them at odds with the possibility of genuinely free action.

Philosophers and non-philosophers have been attracted to the idea that the world incorporates levels of being: higher-level items – ordinary objects, artifacts, human beings – depend on, but are not in any sense reducible to, items at lower levels. I argue that the motivation for levels stems from an implicit acceptance of a Picture Theory of language according to which we can ‘read off’ features of the world from ways we describe the world. Abandonment of the Picture Theory opens the way to a ‘no levels’ conception of reality, a conception that honors anti-reductionist sentiments and preserves the status of the special sciences without the ontological baggage.

Davidson's account of mental causation initiated in “Mental Events” forms a backdrop to much subsequent discussion of the topic. Davidson is commonly taken to defend token identity – token mental events are identical with token physical events – but type diversity – mental types “supervene on,” but are not reducible to or identical with physical types, where types are understood as properties. Mental events are physical events, but one and the same event can have a physical property and, by virtue of having this property, have a mental property as well. There are two salient difficulties with this account. (1) It gives rise to the problem of “causal relevance”: granted that a mental event can cause a physical event, could it do so by virtue of being mental, by virtue of its possession of a mental property? (2) The view thus described is not Davidson's. This chapter discusses Davidson actual account and shows that, whatever its flaws, they are not what they are commonly thought to be.

BAristotle introduces his hylomorphism in the De Anima not as a challenge to the immateriality of Platonic souls, but in response to a problem about the causal relationship between soul and body raised by Plato's theory of affections in the Philebus. Plato holds that mental states have a unique structure. They are characterized by what we would call intentionality and are thereby radically different in kind from physiological states . This sharp divide between the affections, however, leaves unexplained how mental and physiological events causally influence one another--how does desire push the body around?--and how we can even talk about interaction between body and soul. Enter hylomorphism. Mental and physiological states, says Aristotle, are related as form to matter. That is, the soul and body enjoy a primitive or metaphysically basic relation which closes the causal gap left by Plato between the mental and the physical level. Our desire for drink causes us to go to the refrigerator in virtue of its being a structure of a bodily state which moves our limbs in a certain way. Thus hylomorphism provides the metaphysical ground for the causal stories we tell about the soul and body, while at the same time preserving the unique and irreducible structure of the mental which Plato had discovered.

Worries about mental causation are prominent in contemporary discussions of the mind and human agency. Originally, the problem of mental causation was that of understanding how a mental substance (thought to be immaterial) could interact with a material substance, a body. Most philosophers nowadays repudiate immaterial minds, but the problem of mental causation has not gone away. Instead, focus has shifted to mental properties. How could mental properties be causally relevant to bodily behavior? How could something mental qua mental cause what it does? After looking at the traditional Problem of Interaction, we survey various versions of the property-based problem and look at proposed solutions to them.