Combining Texts

All the ideas for 'works', 'Symbolic Reasoning' and 'Response to David Armstrong'

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

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3 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]

5. Theory of Logic / D. Assumptions for Logic / 3. Contradiction

10121

Contradiction is not a sign of falsity, nor lack of contradiction a sign of truth [Pascal]

8. Modes of Existence / C. Powers and Dispositions / 1. Powers

18398

Space, time, and some other basics, are not causal powers [Ellis]