12 ideas
| 5637 | Nowadays logic is seen as the science of extensions, not intensions [Scruton] |
| 12177 | Human artefacts may have essences, in their purposes [Popper] |
| 15642 | If kinds depend only on what can be observed, many underlying essences might produce the same kind [Eagle] |
| 15645 | Nominal essence are the observable properties of things [Eagle] |
| 15643 | Nominal essence mistakenly gives equal weight to all underlying properties that produce appearances [Eagle] |
| 12176 | Science does not aim at ultimate explanations [Popper] |
| 5636 | Cartesian 'ideas' confuse concepts and propositions [Scruton] |
| 5660 | Allegiance is prior to the recognition of individual rights [Scruton] |
| 5653 | A right is a power which is enforced in the name of justice [Scruton] |
| 15641 | Kinds are fixed by the essential properties of things - the properties that make it that kind of thing [Eagle] |
| 12175 | Galilean science aimed at true essences, as the ultimate explanations [Popper] |
| 12179 | Essentialist views of science prevent further questions from being raised [Popper] |