13 ideas
| 5035 | The two basics of reasoning are contradiction and sufficient reason [Leibniz] |
| 18901 | Truthmakers are facts 'of' a domain, not something 'in' the domain [Sommers] |
| 18904 | 'Predicable' terms come in charged pairs, with one the negation of the other [Sommers, by Engelbretsen] |
| 18895 | Logic which maps ordinary reasoning must be transparent, and free of variables [Sommers] |
| 18897 | Predicate logic has to spell out that its identity relation '=' is an equivalent relation [Sommers] |
| 18893 | Translating into quantificational idiom offers no clues as to how ordinary thinkers reason [Sommers] |
| 18903 | Sommers promotes the old idea that negation basically refers to terms [Sommers, by Engelbretsen] |
| 18894 | Predicates form a hierarchy, from the most general, down to names at the bottom [Sommers] |
| 18900 | Unfortunately for realists, modern logic cannot say that some fact exists [Sommers] |
| 5038 | Assume that mind and body follow their own laws, but God has harmonised them [Leibniz] |
| 18898 | In standard logic, names are the only way to refer [Sommers] |
| 6017 | Nomos is king [Pindar] |
| 5037 | God doesn't decide that Adam will sin, but that sinful Adam's existence is to be preferred [Leibniz] |