Combining Texts

All the ideas for 'Symbolic Reasoning', 'Against the Mathematicians' and 'Summula philosophiae naturalis'

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6 ideas

4. Formal Logic / F. Set Theory ST / 3. Types of Set / b. Empty (Null) Set

21548

The null class is the class with all the non-existents as its members [MacColl, by Lackey]

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

16608

Ockham was an anti-realist about the categories [William of Ockham, by Pasnau]

9. Objects / C. Structure of Objects / 4. Quantity of an Object

16599

Ockham says matter must be extended, so we don't need Quantity [William of Ockham, by Pasnau]

16681

Matter gets its quantity from condensation and rarefaction, which is just local motion [William of Ockham]

13. Knowledge Criteria / B. Internal Justification / 4. Foundationalism / b. Basic beliefs

20795

Some things are their own criterion, such as straightness, a set of scales, or light [Sext.Empiricus]

13. Knowledge Criteria / D. Scepticism / 6. Scepticism Critique

20794

How can sceptics show there is no criterion? Weak without, contradiction with [Sext.Empiricus]