Combining Philosophers

All the ideas for José Ortega y Gassett, Max Black and Joan Weiner

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7 ideas

4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic

7726	Aristotelian logic dealt with inferences about concepts, and there were also proposition inferences [Weiner]

4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / j. Axiom of Choice IX

10196

The Axiom of Choice needs a criterion of choice [Black]

7. Existence / A. Nature of Existence / 3. Being / h. Dasein (being human)

20752

For man, being is not what he is, but what he is going to be [Ortega y Gassett]

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

10194

Two things can only be distinguished by a distinct property or a distinct relation [Black]

9. Objects / F. Identity among Objects / 5. Self-Identity

10193

The 'property' of self-identity is uselessly tautological [Black]

9. Objects / F. Identity among Objects / 7. Indiscernible Objects

10195

If the universe just held two indiscernibles spheres, that refutes the Identity of Indiscernibles [Black]

22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / e. Human nature

20756

Instead of having a nature, man only has a history [Ortega y Gassett]