12 ideas
| 18889 | Ostensive definitions needn't involve pointing, but must refer to something specific [Salmon,N] |
| 14627 | S4, and therefore S5, are invalid for metaphysical modality [Salmon,N, by Williamson] |
| 3626 | Knowing the attributes is enough to reveal a substance [Descartes] |
| 18888 | Essentialism says some properties must be possessed, if a thing is to exist [Salmon,N] |
| 3630 | Our thinking about external things doesn't disprove the existence of innate ideas [Descartes] |
| 3631 | A blind man may still contain the idea of colour [Descartes] |
| 18886 | Frege's 'sense' solves four tricky puzzles [Salmon,N] |
| 18887 | The perfect case of direct reference is a variable which has been assigned a value [Salmon,N] |
| 18891 | Nothing in the direct theory of reference blocks anti-essentialism; water structure might have been different [Salmon,N] |
| 16746 | Principles of things are not hidden features of forms, but the laws by which they were formed [Newton] |
| 3639 | Necessary existence is a property which is uniquely part of God's essence [Descartes] |
| 3640 | Possible existence is a perfection in the idea of a triangle [Descartes] |