Combining Texts

Ideas for 'Remarks on the definition and nature of mathematics', 'Three Dialogues of Hylas and Philonous' and 'Semantics for Propositional Attitudes'

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2 ideas

10. Modality / A. Necessity / 10. Impossibility

3946	A thing is shown to be impossible if a contradiction is demonstrated within its definition [Berkeley]

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]