Combining Texts

All the ideas for 'Elements of Mathematical Logic', 'Does Moral Subjectivism Rest on a Mistake?' and 'From Stimulus to Science'

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5 ideas

2. Reason / B. Laws of Thought / 3. Non-Contradiction

6564	To affirm 'p and not-p' is to have mislearned 'and' or 'not' [Quine]

4. Formal Logic / E. Nonclassical Logics / 3. Many-Valued Logic

8942	Lukasiewicz's L3 logic has three truth-values, T, F and I (for 'indeterminate') [Lukasiewicz, by Fisher]

22. Metaethics / A. Ethics Foundations / 1. Nature of Ethics / f. Ethical non-cognitivism

22485

Non-cognitivists give the conditions of use of moral sentences as facts about the speaker [Foot]

22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / h. Expressivism

22486

The mistake is to think good grounds aren't enough for moral judgement, which also needs feelings [Foot]

22. Metaethics / B. Value / 1. Nature of Value / b. Fact and value

22487

Moral arguments are grounded in human facts [Foot]