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Single Idea 9127

[filed under theme 8. Modes of Existence / B. Properties / 11. Properties as Sets ]

Full Idea

Russell refuted Frege's principle that there is a set for each property.

Gist of Idea

Russell refuted Frege's principle that there is a set for each property

Source

report of Bertrand Russell (Letters to Frege [1902], 1904.12.12) by Roy Sorensen - Vagueness and Contradiction 6.1

Book Ref

Sorensen,Roy: 'Vagueness and Contradiction' [OUP 2004], p.97


A Reaction

This is the principle stumbling block to any attempt to explain properties purely in terms of sets. I would say that Russell proved there couldn't be a set for each predicate. You can't glibly equate proper properties with predicates.


The 4 ideas from 'Letters to Frege'

Russell's Paradox is a stripped-down version of Cantor's Paradox [Priest,G on Russell]
Russell's paradox means we cannot assume that every property is collectivizing [Potter on Russell]
Russell refuted Frege's principle that there is a set for each property [Russell, by Sorensen]
We don't assert private thoughts; the objects are part of what we assert [Russell]