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8. Modes of Existence / E. Nominalism / 4. Concept Nominalism

[universals are mental concepts]

6 ideas
Abstracta are abbreviated ways of talking; there are just substances, and truths about them [Leibniz]
     Full Idea: I consider abstracta not as real things but as abbreviated ways of talking ...and to that extent I am a nominalist, at least provisionally ...It suffices to posit only substances as real things, and, to assert truths about these.
     From: Gottfried Leibniz (On the Reality of Accidents [1688]), quoted by Richard T.W. Arthur - Leibniz
     A reaction: I am a modern nominalist, in my hostility to a serious ontological commitment to abstracta. You get into trouble, though, if you say there are only objects or substances. Physics says reality may all be 'fields', or something.... 'Truths' is good.
If we consider whiteness to be merely a mental 'idea', we rob it of its universality [Russell]
     Full Idea: If we come to regard an 'idea' like whiteness as an act of thought, then we come to think of whiteness as mental, but in doing so we rob it of its essential quality of universality.
     From: Bertrand Russell (Problems of Philosophy [1912], Ch. 9)
     A reaction: Presumably we need an ontological commitment to the existence of universals, which is very Platonic. Fatherhood might be a better example, since whiteness is a quale.
Understanding 'is square' is knowing when to apply it, not knowing some object [Quine]
     Full Idea: No more need be demanded of 'is square' than that our listener learn when to expect us to apply it to an object and when not; there is no need for the phrase itself to be the name in turn of a separate object of any kind.
     From: Willard Quine (Identity, Ostension, and Hypostasis [1950], 4)
'Concept Nominalism' says a 'universal' property is just a mental concept applied to lots of things [Armstrong]
     Full Idea: Concept Nominalism says different things have the same property, or belong to the same kind, if the same concept in the mind is applied to different things.
     From: David M. Armstrong (Universals [1995], p.503)
     A reaction: This is more appealing than Predicate Nominalism, and may be right. Our perception of the 'properties' of a thing may be entirely dictated by human interests, not by nature.
Concept and predicate nominalism miss out some predicates, and may be viciously regressive [Armstrong]
     Full Idea: The standard objections to Predicate and Concept Nominalism are that some properties have no predicates or concepts, and that predicates and concepts seem to be types rather than particulars, and it is types the theory is seeking to analyse.
     From: David M. Armstrong (Universals [1995], p.503)
     A reaction: The claim that some properties have no concepts is devastating if true, but may not be. The regress problem is likely to occur in any explanation of universals, I suspect.
Conceptualism says words like 'honesty' refer to concepts, not to properties [Swoyer]
     Full Idea: Conceptualists urge that words like 'honesty', which might seem to refer to properties, really refer to concepts. A few contemporary philosophers have defended conceptualism, and recent empirical work bears on it, but the view is no longer common.
     From: Chris Swoyer (Properties [2000], 1.1)
     A reaction: ..and that's all Swoyer says about this very interesting view! He only cites Cocchiarella 1986 Ch.3. The view leaves a lot of work to be done in explaining how nature is, and how our concepts connect to it, and arise in response to it.