8 ideas
| 10180 | Mathematicians do not study objects, but relations between objects [Poincaré] |
| 16664 | Everything that exists is either a substance or an accident [Albert of Saxony] |
| 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] |
| 16703 | God could make a successive thing so that previous parts cease to exist [Albert of Saxony] |
| 16699 | Successive entities just need parts to succeed one another, without their existence [Albert of Saxony] |
| 15641 | Kinds are fixed by the essential properties of things - the properties that make it that kind of thing [Eagle] |