Combining Texts

All the ideas for 'Possible Worlds', 'Rechnungsmethoden (dissertation)' and 'Meditatio de principio individui'

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4 ideas

6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / c. Priority of numbers

18256

Quantity is inconceivable without the idea of addition [Frege]

6. Mathematics / C. Sources of Mathematics / 2. Intuition of Mathematics

9831	Geometry appeals to intuition as the source of its axioms [Frege]

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

15793

We can take 'ways things might have been' as irreducible elements in our ontology [Stalnaker, by Lycan]

26. Natural Theory / C. Causation / 9. General Causation / d. Causal necessity

12702

Causes can be inferred from perfect knowledge of their effects [Leibniz]