Combining Philosophers

All the ideas for Thrasymachus, Kurt Vonnegut and Augustus De Morgan

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

---

5 ideas

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]

5. Theory of Logic / G. Quantification / 2. Domain of Quantification

17743

De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [De Morgan, by Walicki]

16. Persons / F. Free Will / 5. Against Free Will

22352

Out of more than a hundred planets, Earth is the only one with the idea of free will [Vonnegut]

28. God / C. Attitudes to God / 3. Deism

1558	Clearly the gods ignore human affairs, or they would have given us justice [Thrasymachus]