Combining Texts

All the ideas for 'Philosophical Fragments', 'Notice of Fine's 'Limits of Abstraction'' and 'Problems in Personal Identity'

expand these ideas     |    start again     |     specify just one area for these texts

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4 ideas

5. Theory of Logic / D. Assumptions for Logic / 4. Identity in Logic

3299	In logic identity involves reflexivity (x=x), symmetry (if x=y, then y=x) and transitivity (if x=y and y=z, then x=z) [Baillie]

7. Existence / A. Nature of Existence / 5. Reason for Existence

16007

I assume existence, rather than reasoning towards it [Kierkegaard]

10. Modality / A. Necessity / 2. Nature of Necessity

16013

Nothing necessary can come into existence, since it already 'is' [Kierkegaard]

18. Thought / E. Abstraction / 7. Abstracta by Equivalence

9141	Abstraction theories build mathematics out of second-order equivalence principles [Cook/Ebert]