| 1298 | Lectura |
| I.17.2.4 | p.208 | 16650 | 'Unity' is a particularly difficult word, because things can have hidden unity |
| 1300 | In Praed. |
| 15.1 | p.607 | 16776 | Substance is an intrinsic thing, so parts of substances can't also be intrinsic things |
| 1301 | Oxford Commentary on Sentences |
| II.12.1.14 | p.101 | 16614 | Matter and form give true unity; subject and accident is just unity 'per accidens' |
| 1302 | Ordinatio |
| p.53 | 15386 | If only the singular exists, science is impossible, as that relies on true generalities |
| p.53 | 15387 | If things were singular they would only differ numerically, but horse and tulip differ more than that |
| p.222 | 13094 | The haecceity is the featureless thing which gives ultimate individuality to a substance |
| II d3 p1 q2 n48 | p. | 10919 | What prevents a stone from being divided into parts which are still the stone? |
| III.2.2 | p.591 | 16770 | It is absurd that there is no difference between a genuinely unified thing, and a mere aggregate |
| IV.11.3 | p.139 | 16632 | We distinguish one thing from another by contradiction, because this is, and that is not |
| IV.11.3 | p.582 | 16768 | Two things are different if something is true of one and not of the other |
| IV.12.1 | p.196 | 16648 | Accidents must have formal being, if they are principles of real action, and of mental action and thought |
| 1304 | In Metaphysics |
| III n. 116 | p.125 | 16626 | Substance is only grasped under the general heading of 'being' |
| V.5-6 n91 | p.241 | 16660 | Are things distinct if they are both separate, or if only one of them can be separate? |