Combining Texts

All the ideas for 'Mahaprajnaparamitashastra', 'Anselm and Actuality' and 'Investigations into Logical Deduction'

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

---

3 ideas

4. Formal Logic / D. Modal Logic ML / 4. Alethic Modal Logic

16456

For modality Lewis rejected boxes and diamonds, preferring worlds, and an index for the actual one [Lewis, by Stalnaker]

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]

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

7903	The six perfections are giving, morality, patience, vigour, meditation, and wisdom [Nagarjuna]