Combining Texts

All the ideas for 'Set Theory and related topics (2nd ed)', '75: Is 'Live Unknown' a Wise Precept?' and 'Why Propositions cannot be concrete'

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6 ideas

4. Formal Logic / F. Set Theory ST / 3. Types of Set / e. Equivalence classes

8920	Equivalence relations are reflexive, symmetric and transitive, and classify similar objects [Lipschutz]

15. Nature of Minds / A. Nature of Mind / 2. Psuche

5959	Some philosophers say the soul is light [Plutarch]

18. Thought / E. Abstraction / 1. Abstract Thought

9086	The idea of abstract objects is not ontological; it comes from the epistemological idea of abstraction [Plantinga]

9087	Theists may see abstract objects as really divine thoughts [Plantinga]

19. Language / D. Propositions / 3. Concrete Propositions

9085	If propositions are concrete they don't have to exist, and so they can't be necessary truths [Plantinga]

19. Language / D. Propositions / 4. Mental Propositions

9084	Propositions can't just be in brains, because 'there are no human beings' might be true [Plantinga]