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Ideas for 'Mathematical Methods in Philosophy', 'Unpublished Writings 1872-74' and 'Outline of a System of Utilitarianism'

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2 ideas

5. Theory of Logic / A. Overview of Logic / 3. Value of Logic
14880 Logic is just slavery to language [Nietzsche]
     Full Idea: Logic is merely slavery in the fetters of language.
     From: Friedrich Nietzsche (Unpublished Notebooks 1872-74 [1873], 29 [008])
     A reaction: I don't think I agree with this, but I still like it.
5. Theory of Logic / A. Overview of Logic / 9. Philosophical Logic
18739 Three stages of philosophical logic: syntactic (1905-55), possible worlds (1963-85), widening (1990-) [Horsten/Pettigrew]
     Full Idea: Three periods can be distinguished in philosophical logic: the syntactic stage, from Russell's definite descriptions to the 1950s, the dominance of possible world semantics from the 50s to 80s, and a current widening of the subject.
     From: Horsten,L/Pettigrew,R (Mathematical Methods in Philosophy [2014], 1)
     A reaction: [compressed] I've read elsewhere that the arrival of Tarski's account of truth in 1933, taking things beyond the syntactic, was also a landmark.