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Ideas for 'fragments/reports', 'fragments/reports' and 'The Foundations of Mathematics'

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2. Reason / A. Nature of Reason / 9. Limits of Reason

1813	All reasoning endlessly leads to further reasoning (Mode 12) [Agrippa, by Diog. Laertius]

1811	Proofs often presuppose the thing to be proved (Mode 15) [Agrippa, by Diog. Laertius]

1815	Reasoning needs arbitrary faith in preliminary hypotheses (Mode 14) [Agrippa, by Diog. Laertius]

1812	All discussion is full of uncertainty and contradiction (Mode 11) [Agrippa, by Diog. Laertius]

2. Reason / B. Laws of Thought / 2. Sufficient Reason

5969	Chrysippus said the uncaused is non-existent [Chrysippus, by Plutarch]