Combining Texts

All the ideas for 'fragments/reports', 'Fifteen Sermons' 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]

22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / c. Ethical intuitionism

8066	Butler exalts conscience, but it may be horribly misleading [Anscombe on Butler]

26. Natural Theory / A. Speculations on Nature / 5. Infinite in Nature

1748	Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius]

27. Natural Reality / G. Biology / 3. Evolution

5989	Archelaus said life began in a primeval slime [Archelaus, by Schofield]