Combining Texts

All the ideas for 'Natural Science (lost)', 'Reply to Professor Frankena' and 'Introduction to 'Modality''

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3 ideas

7. Existence / A. Nature of Existence / 6. Criterion for Existence
Everything exists which anyone perceives [Metrodorus of Chios]
10. Modality / A. Necessity / 1. Types of Modality
Maybe modal thought is unavoidable, as a priori recognition of necessary truth-preservation in reasoning [Hale/Hoffmann,A]
23. Ethics / D. Deontological Ethics / 4. Categorical Imperative
Moral judgements are hypothetical, because they depend on interests and desires [Foot]