Combining Texts

All the ideas for 'Good and Evil', 'On the Individuation of Attributes' and 'The Laws of Thought'

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9 ideas

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]

8. Modes of Existence / B. Properties / 12. Denial of Properties

18439

Because things can share attributes, we cannot individuate attributes clearly [Quine]

8. Modes of Existence / E. Nominalism / 5. Class Nominalism

18442

You only know an attribute if you know what things have it [Quine]

9. Objects / A. Existence of Objects / 5. Individuation / a. Individuation

18441

No entity without identity (which requires a principle of individuation) [Quine]

9. Objects / F. Identity among Objects / 6. Identity between Objects

18440

Identity of physical objects is just being coextensive [Quine]

22. Metaethics / C. The Good / 1. Goodness / a. Form of the Good

22489

'Good' is an attributive adjective like 'large', not predicative like 'red' [Geach, by Foot]