Combining Texts

All the ideas for 'Precis of 'Limits of Abstraction'', 'The Absurd' and 'Investigations into Logical Deduction'

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8 ideas

1. Philosophy / D. Nature of Philosophy / 1. Philosophy
3269 If your life is to be meaningful as part of some large thing, the large thing must be meaningful [Nagel]
2. Reason / D. Definition / 2. Aims of Definition
10528 Definitions concern how we should speak, not how things are [Fine,K]
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]
6. Mathematics / B. Foundations for Mathematics / 5. Definitions of Number / d. Hume's Principle
10529 If Hume's Principle can define numbers, we needn't worry about its truth [Fine,K]
10530 Hume's Principle is either adequate for number but fails to define properly, or vice versa [Fine,K]
13. Knowledge Criteria / C. External Justification / 8. Social Justification
3270 Justifications come to an end when we want them to [Nagel]
18. Thought / E. Abstraction / 7. Abstracta by Equivalence
10527 An abstraction principle should not 'inflate', producing more abstractions than objects [Fine,K]
23. Ethics / F. Existentialism / 2. Nihilism
3268 If a small brief life is absurd, then so is a long and large one [Nagel]