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 Reference
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.