Combining Philosophers

All the ideas for Hermarchus, Augustus De Morgan and Julia Driver

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10 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]

20. Action / B. Preliminaries of Action / 1. Intention to Act / a. Nature of intentions

23146

Motives produce intentions, which lead to actions [Driver]

23. Ethics / C. Virtue Theory / 1. Virtue Theory / a. Nature of virtue

23144

Virtue should be defined by consequences, not by states of mind [Driver]

23148

Virtues are character traits or dispositions which produce good consequences for others [Driver]

23150

Control of pregnancy and knowledge of paternity have downgraded chastity [Driver]

23147

Good intentions are not necessary for virtue [Driver]

23. Ethics / C. Virtue Theory / 3. Virtues / a. Virtues

23149

If generosity systematically turned recipients into parasites, it wouldn't be a virtue [Driver]

25. Social Practice / F. Life Issues / 6. Animal Rights

6005	Animals are dangerous and nourishing, and can't form contracts of justice [Hermarchus, by Sedley]