Ideas from 'Possible Worlds' by David Lewis [1973], by Theme Structure

[found in 'The Possible and the Actual' (ed/tr Loux,Michael J.) [Cornell 1979,0-8014-9178-9]].

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7. Existence / A. Nature of Existence / 2. Types of Existence
Lewis's distinction of 'existing' from 'being actual' is Meinong's between 'existing' and 'subsisting'
10. Modality / E. Possible worlds / 1. Possible Worlds / d. Possible worlds actualism
Lewis can't know possible worlds without first knowing what is possible or impossible
What are the ontological grounds for grouping possibilia into worlds?