4 ideas
6343 | For Russell, both propositions and facts are arrangements of objects, so obviously they correspond [Horwich on Russell] |
17743 | De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [De Morgan, by Walicki] |
7534 | In 1906, Russell decided that propositions did not, after all, exist [Russell, by Monk] |
16745 | No one even knows the nature and properties of a fly - why it has that colour, or so many feet [Bacon,R] |