Combining Philosophers

All the ideas for Theophrastus, Hugh MacColl and Morris Kline

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

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4 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 / K. Features of Logics / 1. Axiomatisation

17606

Axioms reveal the underlying assumptions, and reveal relationships between different areas [Kline]

13. Knowledge Criteria / E. Relativism / 6. Relativism Critique

20921

How can we state relativism of sweet and sour, if they have no determinate nature? [Theophrastus]

26. Natural Theory / A. Speculations on Nature / 2. Natural Purpose / c. Purpose denied

5990	Theophrastus doubted whether nature could be explained teleologically [Theophrastus, by Gottschalk]