Combining Philosophers

All the ideas for Eucleides, George Boole and Crates (Theb)

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8 ideas

1. Philosophy / C. History of Philosophy / 2. Ancient Philosophy / c. Classical philosophy

21336

Crates lived in poverty, and treated his whole life as a joke [Crates of Thebes, by Plutarch]

1. Philosophy / D. Nature of Philosophy / 5. Aims of Philosophy / a. Philosophy as worldly

1767	Everyone should study philosophy until they see all people in the same light [Crates of Thebes, by Diog. Laertius]

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]

19. Language / B. Reference / 1. Reference theories

1757	The Electra: she knows this man, but not that he is her brother [Eucleides, by Diog. Laertius]

22. Metaethics / C. The Good / 1. Goodness / b. Types of good

3028	The chief good is unity, sometimes seen as prudence, or God, or intellect [Eucleides]