Combining Texts

All the ideas for 'Ethics: Inventing Right and Wrong', 'On the Concept of Number' and 'Aristotle and the Metaphysics'

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6 ideas

2. Reason / D. Definition / 1. Definitions

11257

The Pythagoreans were the first to offer definitions [Politis, by Politis]

3. Truth / A. Truth Problems / 4. Uses of Truth

11235

'True of' is applicable to things, while 'true' is applicable to words [Politis]

6. Mathematics / C. Sources of Mathematics / 7. Formalism

22293

Hilbert said (to block paradoxes) that mathematical existence is entailed by consistency [Hilbert, by Potter]

7. Existence / A. Nature of Existence / 3. Being / e. Being and nothing

11277

Maybe 'What is being? is confusing because we can't ask what non-being is like [Politis]

9. Objects / D. Essence of Objects / 7. Essence and Necessity / b. Essence not necessities

11248

Necessary truths can be two-way relational, where essential truths are one-way or intrinsic [Politis]

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

4761	The 'error theory' of morals says there is no moral knowledge, because there are no moral facts [Mackie, by Engel]