Combining Texts

All the ideas for 'fragments/reports', 'Human Freedom and Divine choice' and 'Investigations into Logical Deduction'

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4 ideas

5. Theory of Logic / H. Proof Systems / 4. Natural Deduction

13832

Natural deduction shows the heart of reasoning (and sequent calculus is just a tool) [Gentzen, by Hacking]

9. Objects / D. Essence of Objects / 7. Essence and Necessity / a. Essence as necessary properties

13083

The essence is the necessary properties, and the concept includes what is contingent [Leibniz]

23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / e. Character

541	Virtue comes more from habit than character [Critias]

28. God / C. Attitudes to God / 5. Atheism

542	Fear of the gods was invented to discourage secret sin [Critias]