3 ideas
15927 | Definition just needs negation, known variables, conjunction, disjunction, substitution and quantification [Weyl, by Lavine] |
14235 | Saying 'they can become a set' is a tautology, because reference to 'they' implies a collection [Cargile] |
21097 | Modern monarchies are (like republics) rule by law, rather than by men [Hume] |