Combining Texts

All the ideas for 'fragments/reports', 'The Laws of Thought' and 'Truth, Correspondence, Explanation and Knowledge'

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8 ideas

3. Truth / B. Truthmakers / 1. For Truthmakers

18487

We want to know what makes sentences true, rather than defining 'true' [McFetridge]

4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic

8083	Boole applied normal algebra to logic, aiming at an algebra of thought [Boole, by Devlin]

7727	Boole's notation can represent syllogisms and propositional arguments, but not both at once [Boole, by Weiner]

5. Theory of Logic / A. Overview of Logic / 2. History of Logic

8686	Boole made logic more mathematical, with algebra, quantifiers and probability [Boole, by Friend]

5. Theory of Logic / H. Proof Systems / 2. Axiomatic Proof

22277

Boole's method was axiomatic, achieving economy, plus multiple interpretations [Boole, by Potter]

7. Existence / D. Theories of Reality / 8. Facts / a. Facts

18488

We normally explain natural events by citing further facts [McFetridge]

25. Social Practice / E. Policies / 5. Education / b. Education principles

13304

Learned men gain more in one day than others do in a lifetime [Posidonius]

27. Natural Reality / D. Time / 1. Nature of Time / d. Time as measure

20820

Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus]