3 ideas
17743 | De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [De Morgan, by Walicki] |
9783 | While no two classes coincide in membership, there are distinct but coextensive attributes [Cartwright,R] |
20041 | Intentional actions are those which are explained by giving the reason for so acting [Anscombe] |