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Ideas for 'fragments/reports', 'On Freedom' and 'The Principles of Mathematics'

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2 ideas

10. Modality / B. Possibility / 5. Contingency

5040	Necessary truths can be analysed into original truths; contingent truths are infinitely analysable [Leibniz]

10. Modality / B. Possibility / 9. Counterfactuals

22303

It makes no sense to say that a true proposition could have been false [Russell]