Combining Philosophers

All the ideas for H.Putnam/P.Oppenheim, Buddhaghosa and Hugh MacColl

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

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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]

14. Science / D. Explanation / 2. Types of Explanation / j. Explanations by reduction

20653

Six reduction levels: groups, lives, cells, molecules, atoms, particles [Putnam/Oppenheim, by Watson]

25. Social Practice / F. Life Issues / 1. Causing Death

7907	Human killing is worse if the victim is virtuous [Buddhaghosa]