Combining Texts

All the ideas for 'Natural Kinds and Biological Realism', 'Papers of 1913' and 'Letters to Russell'

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7 ideas

1. Philosophy / D. Nature of Philosophy / 3. Philosophy Defined

7085	The main problem of philosophy is what can and cannot be thought and expressed [Wittgenstein, by Grayling]

7. Existence / C. Structure of Existence / 6. Fundamentals / d. Logical atoms

23463

Atomic facts correspond to true elementary propositions [Wittgenstein]

10. Modality / B. Possibility / 1. Possibility

22308

Only the actual exists, so possibilities always reduce to actuality after full analysis [Russell]

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

23490

A thought is mental constituents that relate to reality as words do [Wittgenstein]

26. Natural Theory / B. Natural Kinds / 1. Natural Kinds

17371

Some kinds are very explanatory, but others less so, and some not at all [Devitt]

27. Natural Reality / G. Biology / 5. Species

17373

Species pluralism says there are several good accounts of what a species is [Devitt]

17372

The higher categories are not natural kinds, so the Linnaean hierarchy should be given up [Devitt]