Combining Texts

All the ideas for 'Clitophon', 'Letter to Frege 29.12.1899' and 'On the Syllogism IV'

expand these ideas     |    start again     |     specify just one area for these texts

---

4 ideas

3. Truth / G. Axiomatic Truth / 1. Axiomatic Truth

15716

If axioms and their implications have no contradictions, they pass my criterion of truth and existence [Hilbert]

5. Theory of Logic / E. Structures of Logic / 6. Relations in Logic

17744

De Morgan started the study of relations and their properties [De Morgan, by Walicki]

13501

De Morgan found inferences involving relations, which eluded Aristotle's syllogistic [De Morgan, by Hart,WD]

22. Metaethics / B. Value / 2. Values / f. Altruism

1590	The just man does not harm his enemies, but benefits everyone [Plato]