Combining Texts

All the ideas for 'Of Liberty and Necessity', 'Investigations into Logical Deduction' and 'Thought and Responsibility'

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

---

3 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]

10. Modality / B. Possibility / 5. Contingency

6215	'Contingent' means that the cause is unperceived, not that there is no cause [Hobbes]

22. Metaethics / A. Ethics Foundations / 1. Nature of Ethics / g. Moral responsibility

20166

A man is a responsible agent to the extent he has an intention, and knows what he is doing [Hampshire]