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Single Idea 23648
[filed under theme 18. Thought / E. Abstraction / 1. Abstract Thought
]
Full Idea
First we resolve or analyse a subject into its known attributes, and give a name to each attribute. Then we observe one or more attributes to be common to many subjects. The first philosophers call 'abstraction', and the second is 'generalising'.
Gist of Idea
First we notice and name attributes ('abstracting'); then we notice that subjects share them ('generalising')
Source
Thomas Reid (Essays on Intellectual Powers 5: Abstraction [1785], 3)
Book Ref
Reid,Thomas: 'Inquiry and Essays', ed/tr. Beanblossom /K.Lehrer [Hackett 1983], p.239
A Reaction
It is very unfashionable in analytic philosophy to view universals in this way, but it strikes me as obviously correct. There are not weird abstract entities awaiting a priori intuition. There are just features of the world to be observed and picked out.
Related Idea
Idea 20204
Whether the mind has parts is irrelevant, since it obviously has distinct capacities [Aristotle]
The
22 ideas
with the same theme
[general concepts not about concrete objects]:
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9569
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The origin of geometry started in sensation, then moved to calculation, and then to reason
[Proclus]
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10503
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We abstract forms from appearances, and acquire knowledge of immaterial things
[Aquinas]
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10509
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Understanding consists entirely of grasping abstracted species
[Aquinas]
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5827
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A species of thing is an abstract idea, and a word is a sign that refers to the idea
[Locke]
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23648
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First we notice and name attributes ('abstracting'); then we notice that subjects share them ('generalising')
[Reid]
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6925
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The new philosophy thinks of the concrete in a concrete (not a abstract) manner
[Feuerbach]
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9078
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The study of the nature of Abstract Ideas does not belong to logic, but to a different science
[Mill]
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9080
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General conceptions are a necessary preliminary to Induction
[Mill]
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9846
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Defining 'direction' by parallelism doesn't tell you whether direction is a line
[Dummett on Frege]
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9030
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Abstractions can be interpreted dispositionally, as the ability to recognise or imagine an item
[Price,HH]
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9029
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If ideas have to be images, then abstract ideas become a paradoxical problem
[Price,HH]
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11102
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Apply '-ness' or 'class of' to abstract general terms, to get second-level abstract singular terms
[Quine]
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17664
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Each subject has an appropriate level of abstraction
[Armstrong]
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9873
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Abstract terms are acceptable as long as we know how they function linguistically
[Dummett]
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10839
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You can't infer a dog's abstract concepts from its behaviour
[Dummett]
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9086
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The idea of abstract objects is not ontological; it comes from the epistemological idea of abstraction
[Plantinga]
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9087
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Theists may see abstract objects as really divine thoughts
[Plantinga]
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8901
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Abstraction is usually explained either by example, or conflation, or abstraction, or negatively
[Lewis]
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9144
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Fine's 'procedural postulationism' uses creative definitions, but avoids abstract ontology
[Fine,K, by Cook/Ebert]
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8299
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Abstractions are non-spatial, or dependent, or derived from concepts
[Lowe]
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9609
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The older sense of 'abstract' is where 'redness' or 'group' is abstracted from particulars
[Brown,JR]
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9611
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'Abstract' nowadays means outside space and time, not concrete, not physical
[Brown,JR]
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