16 ideas
22070 | Irony is consciousness of abundant chaos [Schlegel,F] |
22069 | Plato has no system. Philosophy is the progression of a mind and development of thoughts [Schlegel,F] |
10282 | Logic is the study of sound argument, or of certain artificial languages (or applying the latter to the former) [Hodges,W] |
10283 | A formula needs an 'interpretation' of its constants, and a 'valuation' of its variables [Hodges,W] |
10284 | There are three different standard presentations of semantics [Hodges,W] |
10285 | I |= φ means that the formula φ is true in the interpretation I [Hodges,W] |
10288 | Down Löwenheim-Skolem: if a countable language has a consistent theory, that has a countable model [Hodges,W] |
10289 | Up Löwenheim-Skolem: if infinite models, then arbitrarily large models [Hodges,W] |
10287 | If a first-order theory entails a sentence, there is a finite subset of the theory which entails it [Hodges,W] |
10286 | A 'set' is a mathematically well-behaved class [Hodges,W] |
22068 | Poetry is transcendental when it connects the ideal to the real [Schlegel,F] |
22030 | For poets free choice is supreme [Schlegel,F] |
22071 | True love is ironic, in the contrast between finite limitations and the infinity of love [Schlegel,F] |
22029 | Irony is the response to conflicts of involvement and attachment [Schlegel,F, by Pinkard] |
1748 | Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius] |
5989 | Archelaus said life began in a primeval slime [Archelaus, by Schofield] |