Combining Texts

All the ideas for 'The Nature of Things', 'What is an Idea?' and 'Paradoxes of the Infinite'

expand these ideas     |    start again     |     specify just one area for these texts

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9 ideas

4. Formal Logic / F. Set Theory ST / 1. Set Theory

9987	An aggregate in which order does not matter I call a 'set' [Bolzano]

4. Formal Logic / F. Set Theory ST / 7. Natural Sets

9406	A class is natural when everybody can spot further members of it [Quinton]

6. Mathematics / A. Nature of Mathematics / 5. The Infinite / a. The Infinite

10856

A truly infinite quantity does not need to be a variable [Bolzano]

7. Existence / E. Categories / 5. Category Anti-Realism

15730

Extreme nominalists say all classification is arbitrary convention [Quinton]

8. Modes of Existence / B. Properties / 5. Natural Properties

15728

The naturalness of a class depends as much on the observers as on the objects [Quinton]

9407	Properties imply natural classes which can be picked out by everybody [Quinton]

8. Modes of Existence / D. Universals / 4. Uninstantiated Universals

15729

Uninstantiated properties must be defined using the instantiated ones [Quinton]

9. Objects / A. Existence of Objects / 5. Individuation / b. Individuation by properties

8520	An individual is a union of a group of qualities and a position [Quinton, by Campbell,K]

18. Thought / C. Content / 2. Ideas

19423

By an 'idea' I mean not an actual thought, but the resources we can draw on to think [Leibniz]