Combining Texts

All the ideas for 'Changes in Events and Changes in Things', 'The Laws of Thought' and 'Toward a Philosophy of History'

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8 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]

7. Existence / A. Nature of Existence / 3. Being / h. Dasein (being human)

20752

For man, being is not what he is, but what he is going to be [Ortega y Gassett]

7. Existence / D. Theories of Reality / 8. Facts / b. Types of fact

15201

That Queen Anne is dead is a 'general fact', not a fact about Queen Anne [Prior,AN]

22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / e. Human nature

20756

Instead of having a nature, man only has a history [Ortega y Gassett]

27. Natural Reality / D. Time / 2. Passage of Time / e. Tensed (A) series

22899

'Thank goodness that's over' is not like 'thank goodness that happened on Friday' [Prior,AN]