Combining Texts

All the ideas for 'Ethics: Inventing Right and Wrong', 'Empiricist View of Religion' and 'Introduction to Zermelo's 1930 paper'

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6 ideas

4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / a. Axioms for sets
The first-order ZF axiomatisation is highly non-categorical [Hallett,M]
Non-categoricity reveals a sort of incompleteness, with sets existing that the axioms don't reveal [Hallett,M]
4. Formal Logic / F. Set Theory ST / 7. Natural Sets
Zermelo allows ur-elements, to enable the widespread application of set-theory [Hallett,M]
6. Mathematics / A. Nature of Mathematics / 5. The Infinite / g. Continuum Hypothesis
The General Continuum Hypothesis and its negation are both consistent with ZF [Hallett,M]
22. Metaethics / A. Ethics Foundations / 1. Nature of Ethics / f. Ethical non-cognitivism
The 'error theory' of morals says there is no moral knowledge, because there are no moral facts [Mackie, by Engel]
29. Religion / D. Religious Issues / 1. Religious Commitment / b. Religious Meaning
If meaning is use, then religious sentences have meaning because they are used to assert an intention about how to live [Braithwaite, by PG]