Combining Texts

Ideas for 'Metaphysics', 'Substances without Substrata' and 'The Ultimate Constituents of Matter'

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3 ideas

4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / e. Axioms of PL

562	Axioms are the underlying principles of everything, and who but the philosopher can assess their truth? [Aristotle]

573	The axioms of mathematics are part of philosophy [Aristotle]

4. Formal Logic / F. Set Theory ST / 8. Critique of Set Theory

7548	Classes, grouped by a convenient property, are logical constructions [Russell]