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Ideas for 'fragments/reports', 'Tractatus Logico-Philosophicus' and 'Philosophy and Scientific Image of Man'

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4 ideas

5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
Logic fills the world, to its limits [Wittgenstein]
     Full Idea: Logic pervades the world: the limits of the world are also its limits.
     From: Ludwig Wittgenstein (Tractatus Logico-Philosophicus [1921], 5.61)
     A reaction: This is a gospel belief for hardcore analytic philosophy. Hence Williamson writes a book on modal logic as metaphysics.
Logic concerns everything that is subject to law; the rest is accident [Wittgenstein]
     Full Idea: The exploration of logic means the exploration of everything that is subject to law. And outside logic everything is accidental.
     From: Ludwig Wittgenstein (Tractatus Logico-Philosophicus [1921], 6.3)
     A reaction: Why should laws be logical? Legislatures can pass whimsical laws. Does he mean that the laws of nature are logically necessary? He can't just mean logical laws.
5. Theory of Logic / A. Overview of Logic / 3. Value of Logic
Wittgenstein is right that logic is just tautologies [Wittgenstein, by Russell]
     Full Idea: I think Wittgenstein is right when he says (in the 'Tractatus') that logic consists wholly of tautologies.
     From: report of Ludwig Wittgenstein (Tractatus Logico-Philosophicus [1921]) by Bertrand Russell - My Philosophical Development Ch.10
     A reaction: Despite Russell's support, I find this hard to accept. While a 'pure' or 'Platonist' logic may be hard to demonstrate or believe, I have a strong gut feeling that logic is more of a natural phenomenon than a human convention.
5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
Logic is a priori because it is impossible to think illogically [Wittgenstein]
     Full Idea: What makes logic a priori is the impossibility of illogical thought.
     From: Ludwig Wittgenstein (Tractatus Logico-Philosophicus [1921], 5.4731)
     A reaction: That places the a priori aspect of it in us (in the epistemology), rather than in the necessity of the logic (the ontology), which is as Kripke says it should be.