16 ideas
| 9108 | From an impossibility anything follows [William of Ockham] |
| 9107 | A proposition is true if its subject and predicate stand for the same thing [William of Ockham] |
| 16300 | Ockham had an early axiomatic account of truth [William of Ockham, by Halbach] |
| 9106 | The word 'every' only signifies when added to a term such as 'man', referring to all men [William of Ockham] |
| 9113 | Just as unity is not a property of a single thing, so numbers are not properties of many things [William of Ockham] |
| 9110 | The words 'thing' and 'to be' assert the same idea, as a noun and as a verb [William of Ockham] |
| 17644 | Metaphysical realism is committed to there being one ultimate true theory [Putnam] |
| 17648 | It is an illusion to think there could be one good scientific theory of reality [Putnam] |
| 15388 | Universals are single things, and only universal in what they signify [William of Ockham] |
| 17643 | Shape is essential relative to 'statue', but not essential relative to 'clay' [Putnam] |
| 9109 | If essence and existence were two things, one could exist without the other, which is impossible [William of Ockham] |
| 17642 | The old view that sense data are independent of mind is quite dotty [Putnam] |
| 9105 | Some concepts for propositions exist only in the mind, and in no language [William of Ockham] |
| 1748 | Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius] |
| 17645 | An alien might think oxygen was the main cause of a forest fire [Putnam] |
| 5989 | Archelaus said life began in a primeval slime [Archelaus, by Schofield] |