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Ideas for 'In Praed.', 'The Principles of Mathematics' and 'Reply to Fourth Objections'

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8 ideas

9. Objects / A. Existence of Objects / 3. Objects in Thought
7781 I call an object of thought a 'term'. This is a wide concept implying unity and existence. [Russell]
9. Objects / A. Existence of Objects / 5. Simples
14166 Unities are only in propositions or concepts, and nothing that exists has unity [Russell]
9. Objects / B. Unity of Objects / 1. Unifying an Object / a. Intrinsic unification
14164 The only unities are simples, or wholes composed of parts [Russell]
9. Objects / B. Unity of Objects / 1. Unifying an Object / b. Unifying aggregates
14112 A set has some sort of unity, but not enough to be a 'whole' [Russell]
9. Objects / B. Unity of Objects / 2. Substance / a. Substance
16776 Substance is an intrinsic thing, so parts of substances can't also be intrinsic things [Duns Scotus]
9. Objects / D. Essence of Objects / 15. Against Essentialism
14170 Change is obscured by substance, a thing's nature, subject-predicate form, and by essences [Russell]
9. Objects / F. Identity among Objects / 7. Indiscernible Objects
14107 Terms are identical if they belong to all the same classes [Russell]
11849 It at least makes sense to say two objects have all their properties in common [Wittgenstein on Russell]