Combining Texts

All the ideas for 'Alcibiades', 'The Concept of Logical Consequence' and 'Philosophy and Politics'

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9 ideas

5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence
Split out the logical vocabulary, make an assignment to the rest. It's logical if premises and conclusion match [Tarski, by Rumfitt]
5. Theory of Logic / B. Logical Consequence / 4. Semantic Consequence |=
X follows from sentences K iff every model of K also models X [Tarski]
5. Theory of Logic / J. Model Theory in Logic / 1. Logical Models
A 'model' is a sequence of objects which satisfies a complete set of sentential functions [Tarski]
17. Mind and Body / A. Mind-Body Dualism / 1. Dualism
Man uses his body, so must be separate from it [Anon (Plat), by Maslin]
19. Language / E. Analyticity / 1. Analytic Propositions
Sentences are 'analytical' if every sequence of objects models them [Tarski]
24. Political Theory / D. Ideologies / 5. Democracy / f. Against democracy
Democratic institutions become impossible in a fanatical democracy [Russell]
24. Political Theory / D. Ideologies / 6. Liberalism / a. Liberalism basics
Liberal opinions are tentative rather than dogmatic, and are always responsive to new evidence [Russell]
Empiricism is ethically superior, because dogmatism favours persecution and hatred [Russell]
Empiricist Liberalism is the only view for someone who favours scientific evidence and happiness [Russell]