Combining Texts

All the ideas for 'Intuitionism: an Introduction', 'On 'Insolubilia' and their solution' and 'Logic [1897]'

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5 ideas

4. Formal Logic / F. Set Theory ST / 5. Conceptions of Set / c. Logical sets

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The 'no classes' theory says the propositions just refer to the members [Russell]

5. Theory of Logic / L. Paradox / 4. Paradoxes in Logic / d. Richard's paradox

21565

Richard's puzzle uses the notion of 'definition' - but that cannot be defined [Russell]

5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / a. The Liar paradox

21564

Vicious Circle: what involves ALL must not be one of those ALL [Russell]

6. Mathematics / C. Sources of Mathematics / 6. Logicism / d. Logicism critique

8754	Logic is dependent on mathematics, not the other way round [Heyting, by Shapiro]

13. Knowledge Criteria / C. External Justification / 2. Causal Justification

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Psychological logic can't distinguish justification from causes of a belief [Frege]