8 ideas
13639 | Quine says higher-order items are intensional, and lack a clearly defined identity relation [Quine, by Shapiro] |
21557 | Russell confused use and mention, and reduced classes to properties, not to language [Quine, by Lackey] |
22745 | Pherecydes said the first principle and element is earth [Pherecydes, by Sext.Empiricus] |
17402 | Mendeleev saw three principles in nature: matter, force and spirit (where the latter seems to be essence) [Mendeleev, by Scerri] |
17399 | Elements don't survive in compounds, but the 'substance' of the element does [Mendeleev] |
17400 | Mendeleev focused on abstract elements, not simple substances, so he got to their essence [Mendeleev, by Scerri] |
17401 | Mendeleev had a view of elements which allowed him to overlook some conflicting observations [Mendeleev] |
5883 | Pherecydes was the first to say that the soul is eternal [Pherecydes, by Cicero] |