Combining Texts

All the ideas for 'Through the Looking Glass', 'The Theory of Moral Sentiments' and 'Investigations into Logical Deduction'

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

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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]

7. Existence / A. Nature of Existence / 3. Being / e. Being and nothing

21982

I only wish I had such eyes as to see Nobody! It's as much as I can do to see real people. [Carroll,L]

22. Metaethics / C. The Good / 1. Goodness / i. Moral luck

5126	A carelessly thrown brick is condemned much more if it hits someone [Smith,A, by Harman]