13076
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Scholastics treat relations as two separate predicates of the relata [Cover/O'Leary-Hawthorne]
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Full Idea:
The scholastics treated it as a step in the right explanatory direction to analyze a relational statement of the form 'aRb' into two subject-predicate statements, attributing different relational predicates to a and to b.
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From:
Cover,J/O'Leary-Hawthorne,J (Substance and Individuation in Leibniz [1999], 2.2.1)
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A reaction:
The only alternative seems to be Russell's view of relations as pure universals, having a life of their own, quite apart from their relata. Or you could take them as properties of space, time (and powers?), external to the relata?
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13102
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If you individuate things by their origin, you still have to individuate the origins themselves [Cover/O'Leary-Hawthorne]
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Full Idea:
If we go for the necessity-of-origins view, A and B are different if the origin of A is different from the origin of B. But one is left with the further question 'When is the origin of A distinct from the origin of B?'
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From:
Cover,J/O'Leary-Hawthorne,J (Substance and Individuation in Leibniz [1999], 7.4.1)
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A reaction:
There may be an answer to this, in a regress of origins that support one another, but in the end the objection is obviously good. You can't begin to refer to an 'origin' if you can't identify anything in the first place.
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13103
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Numerical difference is a symmetrical notion, unlike proper individuation [Cover/O'Leary-Hawthorne]
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Full Idea:
Scholastics distinguished criteria of numerical difference from questions of individuation proper, since numerical difference is a symmetrical notion.
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From:
Cover,J/O'Leary-Hawthorne,J (Substance and Individuation in Leibniz [1999], 7.4.1)
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A reaction:
This apparently old-fashioned point appears to be conclusively correct. Modern thinkers, though, aren't comfortable with proper individuation, because they don't believe in concepts like 'essence' and 'substance' that are needed for the job.
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13104
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Haecceity as property, or as colourless thisness, or as singleton set [Cover/O'Leary-Hawthorne]
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Full Idea:
There is a contemporary property construal of haecceities, ...and a Scotistic construal as primitive, 'colourless' thisnesses which, unlike singleton-set haecceities, are aimed to do some explanatory work.
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From:
Cover,J/O'Leary-Hawthorne,J (Substance and Individuation in Leibniz [1999], 7.4.4)
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A reaction:
[He associates the contemporary account with David Kaplan] I suppose I would say that individuation is done by properties, but not by some single property, so I take it that I don't believe in haecceities at all. What individuates a haecceity?
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13100
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Maybe 'substance' is more of a mass-noun than a count-noun [Cover/O'Leary-Hawthorne]
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Full Idea:
We could think of 'substance' on the model of a mass noun, rather than a count noun.
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From:
Cover,J/O'Leary-Hawthorne,J (Substance and Individuation in Leibniz [1999], 7.3)
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A reaction:
They offer this to help Leibniz out of a mess, but I think he would be appalled. The proposal seems close to 'prime matter' in Aristotle, which never quite does the job required of it. The idea is nice, though, and should be taken seriously.
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13068
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We can ask for the nature of substance, about type of substance, and about individual substances [Cover/O'Leary-Hawthorne]
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Full Idea:
In the 'blueprint' approach to substance, we confront at least three questions: What is it for a thing to be an individual substance? What is it for a thing to be the kind of substance that it is? What is it to be that very individual substance?
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From:
Cover,J/O'Leary-Hawthorne,J (Substance and Individuation in Leibniz [1999], 1.1.1)
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A reaction:
My working view is that the answer to the first question is that substance is essence, that the second question is overrated and parasitic on the third, and that the third is the key question, and also reduces to essence.
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13069
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The general assumption is that substances cannot possibly be non-substances [Cover/O'Leary-Hawthorne]
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Full Idea:
There is a widespread assumption, now and in the past, that substances are essentially substances: nothing is actually a substance but possibly a non-substance.
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From:
Cover,J/O'Leary-Hawthorne,J (Substance and Individuation in Leibniz [1999], 1.1.2)
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A reaction:
It seems to me that they clearly mean, in this context, that substances are 'necessarily' substances, not that they are 'essentially' substances. I would just say that substances are essences, and leave the necessity question open.
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13101
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Necessity-of-origin won't distinguish ex nihilo creations, or things sharing an origin [Cover/O'Leary-Hawthorne]
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Full Idea:
A necessity-of-origins approach cannot work to distinguish things that come into being genuinely ex nihilo, and cannot work to distinguish things sharing a single origin.
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From:
Cover,J/O'Leary-Hawthorne,J (Substance and Individuation in Leibniz [1999], 7.4.1)
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A reaction:
Since I am deeply suspicious of essentiality or necessity of origin (and they are not, I presume, the same thing) I like these two. Twins have always bothered me with the second case (where order of birth seems irrelevant).
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13071
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We can go beyond mere causal explanations if we believe in an 'order of being' [Cover/O'Leary-Hawthorne]
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Full Idea:
The philosopher comfortable with an 'order of being' has richer resources to make sense of the 'in virtue of' relation than that provided only by causal relations between states of affairs, positing in addition other sorts of explanatory relationships.
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From:
Cover,J/O'Leary-Hawthorne,J (Substance and Individuation in Leibniz [1999], 1.1.2)
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A reaction:
This might best be characterised as 'ontological dependence', and could be seen as a non-causal but fundamental explanatory relationship, and not one that has to depend on a theistic world view.
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4983
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There are no rules linking thought and behaviour, because endless other thoughts intervene [Davidson]
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Full Idea:
We know too much about thought and behaviour to trust exact and universal statements linking them. Beliefs and desires issue in behaviour only as modified and mediated by further beliefs and desires, attitudes and attendings, without limit.
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From:
Donald Davidson (Mental Events [1970], p.217)
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A reaction:
Now seen as a key objection to behaviourism, and rightly so. However, I am not sure about "without limit", which implies an implausible absolute metaphysical freedom. Davidson goes too far in denying any nomological link between thought and brain.
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5497
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Mind is outside science, because it is humanistic and partly normative [Davidson, by Lycan]
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Full Idea:
For Davidson, mental types are individuated by considerations that are nonscientific, distinctly humanistic, and part normative, so will not coincide with any types that are designated in scientific terms.
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From:
report of Donald Davidson (Mental Events [1970]) by William Lycan - Introduction - Ontology p.8
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A reaction:
I just don't believe this, mainly because I don't accept that there is a category called 'nonscientific'. All we are saying is that a brain is a hugely complicated object, and we don't properly understand its operations, though we relate to it very well.
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2321
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If rule-following and reason are 'anomalies', does that make reductionism impossible? [Davidson, by Kim]
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Full Idea:
Davidson takes mental anomalism (that the mind exhibits normativity and rationality), and in particular his claim that there are no laws connecting mental and physical properties, to undermine mind-body reductionism.
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From:
report of Donald Davidson (Mental Events [1970]) by Jaegwon Kim - Mind in a Physical World §4 p.092
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A reaction:
A nice summary of the core idea of property dualism. Personally I expect the whole lot to be reducible, and to follow laws, but the sheer complexity of the brain permanently bars us from actually doing the reduction.
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3404
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Davidson claims that mental must be physical, to make mental causation possible [Davidson, by Kim]
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Full Idea:
Davidson's thesis is that if mental events of a particular kind cause physical events of a particular kind, and the two kinds are connected by a law, then they must both be physical kinds.
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From:
report of Donald Davidson (Mental Events [1970]) by Jaegwon Kim - Philosophy of Mind p.137
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A reaction:
Davidson would pretty obviously be right. The whole problem here is the idea of a 'law'. You can only have strict law for simple entities, like particles and natural kinds. The brain is a mess, like weather or explosions.
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6620
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Davidson sees identity as between events, not states, since they are related in causation [Davidson, by Lowe]
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Full Idea:
Davidson's version of the identity theory is couched in terms of events rather than states, because he regards causation as a relation between events.
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From:
report of Donald Davidson (Mental Events [1970]) by E.J. Lowe - Introduction to the Philosophy of Mind Ch.2 n12
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A reaction:
I think it may be more to the point that the mind is a dynamic thing, and so it consists of events rather than states, and hence we want to know what those events are made up from. I think my chair is causing me to rest above the floor…
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