8 ideas
18812 | Split out the logical vocabulary, make an assignment to the rest. It's logical if premises and conclusion match [Tarski, by Rumfitt] |
13344 | X follows from sentences K iff every model of K also models X [Tarski] |
21677 | How can the not-true fail to be false, or the not-false fail to be true? [Cicero] |
13343 | A 'model' is a sequence of objects which satisfies a complete set of sentential functions [Tarski] |
3061 | Anaxarchus said that he was not even sure that he knew nothing [Anaxarchus, by Diog. Laertius] |
13345 | Sentences are 'analytical' if every sequence of objects models them [Tarski] |
21667 | Oratory and philosophy are closely allied; orators borrow from philosophy, and ornament it [Cicero] |
21678 | If desire is not in our power then neither are choices, so we should not be praised or punished [Cicero] |