Combining Philosophers

All the ideas for Nicolas Malebranche and George Boole

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7 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 / 8. Properties as Modes

16669

Everything that exists is either a being, or some mode of a being [Malebranche]

26. Natural Theory / C. Causation / 9. General Causation / d. Causal necessity

12726

In a true cause we see a necessary connection [Malebranche]

2594	A true cause must involve a necessary connection between cause and effect [Malebranche]