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Ideas for 'Folk Psychology', 'Letters to Frege' and 'Coming-to-be and Passing-away (Gen/Corr)'

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8. Modes of Existence / B. Properties / 11. Properties as Sets

9127	Russell refuted Frege's principle that there is a set for each property [Russell, by Sorensen]
	Full Idea: Russell refuted Frege's principle that there is a set for each property.
	From: report of Bertrand Russell (Letters to Frege [1902], 1904.12.12) by Roy Sorensen - Vagueness and Contradiction 6.1
	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.