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Single Idea 16144

[filed under theme 9. Objects / D. Essence of Objects / 10. Essence as Species ]

Full Idea

If 'man' and any other item similarly specified is a substance, then none of the contents of the account of man is a substance of anything. 'Animal', for instance, does not exist over and above particular animals.

Gist of Idea

Genera are not substances, and do not exist apart from the ingredient species

Source

Aristotle (Metaphysics [c.324 BCE], 1038b31)

Book Ref

Aristotle: 'Metaphysics', ed/tr. Lawson-Tancred,Hugh [Penguin 1998], p.217


A Reaction

[I think 'particular animals' refers to species, not individuals, here] I take it as self-evident that this implies that species do not exist, apart from the individuals that constitute them.


The 18 ideas with the same theme [essence for animals is the species they belong to]:

Generalities like man and horse are not substances, but universal composites of account and matter [Aristotle]
Genera are not substances, and do not exist apart from the ingredient species [Aristotle]
'Categories' answers 'what?' with species, genus, differerentia; 'Met.' Z.17 seeks causal essence [Aristotle, by Wedin]
Standardly, Aristotelian essences are taken to be universals of the species [Aristotle, by Witt]
In 'Met.' he says genera can't be substances or qualities, so aren't in the ontology [Aristotle, by Frede,M]
Generic terms like 'man' are not substances, but qualities, relations, modes or some such thing [Aristotle]
In our ideas, the idea of essence is inseparable from the concept of a species [Locke]
If we based species on real essences, the individuals would be as indistinguishable as two circles [Locke]
Internal constitution doesn't decide a species; should a watch contain four wheels or five? [Locke]
For some sorts, a member of it is necessarily a member [Leibniz]
Truths about species are eternal or necessary, but individual truths concern what exists [Leibniz]
Kripke says internal structure fixes species; I say it is genetic affinity and a common descent [Kripke, by Dummett]
Given that Nixon is indeed a human being, that he might not have been does not concern knowledge [Kripke]
Things that gradually change, like species, can still have essences [Devitt]
Essentialism concerns the nature of a group, not its category [Devitt]
It seems that species lack essential properties, so they can't be natural kinds [Dupré]
A species might have its essential genetic mechanism replaced by a new one [Dupré]
Alien 'tigers' can't be tigers if they are not related to our tigers [Almog]