Combining Texts

All the ideas for 'On Certainty', 'Gdel's Proof' and 'The Logical Syntax of Language'

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6 ideas

5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence

13342

Carnap defined consequence by contradiction, but this is unintuitive and changes with substitution [Tarski on Carnap]

5. Theory of Logic / C. Ontology of Logic / 4. Logic by Convention

13251

Each person is free to build their own logic, just by specifying a syntax [Carnap]

13. Knowledge Criteria / B. Internal Justification / 4. Foundationalism / a. Foundationalism

3597	Foundations need not precede other beliefs [Wittgenstein]

13. Knowledge Criteria / D. Scepticism / 6. Scepticism Critique

3596	Total doubt can't even get started [Wittgenstein, by Williams,M]

18. Thought / A. Modes of Thought / 5. Rationality / b. Human rationality

9591	The human intellect has not been, and cannot be, fully formalized [Nagel/Newman]

19. Language / A. Nature of Meaning / 10. Denial of Meanings

4721	If you are not certain of any fact, you cannot be certain of the meaning of your words either [Wittgenstein]