10 ideas
| 19400 | Possibles demand existence, so as many of them as possible must actually exist [Leibniz] |
| 19401 | God's sufficient reason for choosing reality is in the fitness or perfection of possibilities [Leibniz] |
| 17368 | Essentialism concerns the nature of a group, not its category [Devitt] |
| 17370 | Things that gradually change, like species, can still have essences [Devitt] |
| 19402 | The actual universe is the richest composite of what is possible [Leibniz] |
| 16634 | I can't be unaware of anything which is in me [Descartes] |
| 3635 | Essence must be known before we discuss existence [Descartes] |
| 17369 | We name species as small to share properties, but large enough to yield generalisations [Devitt] |
| 17367 | Species are phenetic, biological, niche, or phylogenetic-cladistic [Devitt, by PG] |
| 3634 | We can't prove a first cause from our inability to grasp infinity [Descartes] |