Combining Texts

All the ideas for 'Opus Maius (major works)', 'Semantics for Propositional Attitudes' and 'Problems in Personal Identity'

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

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4 ideas

5. Theory of Logic / D. Assumptions for Logic / 4. Identity in Logic

3299	In logic identity involves reflexivity (x=x), symmetry (if x=y, then y=x) and transitivity (if x=y and y=z, then x=z) [Baillie]

7. Existence / D. Theories of Reality / 11. Ontological Commitment / a. Ontological commitment

15785

Our commitments are to an 'ontology', but also to an 'ideology', or conceptual system [Hintikka]

10. Modality / E. Possible worlds / 2. Nature of Possible Worlds / a. Nature of possible worlds

15786

Commitment to possible worlds is part of our ideology, not part of our ontology [Hintikka]

26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / d. Knowing essences

16745

No one even knows the nature and properties of a fly - why it has that colour, or so many feet [Bacon,R]