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Single Idea 15825

[filed under theme 9. Objects / F. Identity among Objects / 6. Identity between Objects ]

Full Idea

Carneades denied the principle of the transitivity of identity.

Gist of Idea

Carneades denied the transitivity of identity

Source

report of Carneades (fragments/reports [c.174 BCE], fr 41-42) by Roderick Chisholm - Person and Object 3.1

Book Ref

Chisholm,Roderick: 'Person and Object' [Open Court 1976], p.91


A Reaction

Chisholm calls this 'extreme', but I assume Carneades wouldn't deny the principle in mathematics. I'm guessing that he just means that nothing ever stays quite the same.


The 10 ideas from 'fragments/reports'

Carneades' pinnacles of philosophy are the basis of knowledge (the criterion of truth) and the end of appetite (good) [Carneades, by Cicero]
Future events are true if one day we will say 'this event is happening now' [Carneades]
We say future things are true that will possess actuality at some following time [Carneades, by Cicero]
Carneades distinguished logical from causal necessity, when talking of future events [Long on Carneades]
Voluntary motion is intrinsically within our power, and this power is its cause [Carneades, by Cicero]
Some actions are within our power; determinism needs prior causes for everything - so it is false [Carneades, by Cicero]
Even Apollo can only foretell the future when it is naturally necessary [Carneades, by Cicero]
Carneades said that after a shipwreck a wise man would seize the only plank by force [Carneades, by Tuck]
People change laws for advantage; either there is no justice, or it is a form of self-injury [Carneades, by Lactantius]
Carneades denied the transitivity of identity [Carneades, by Chisholm]