Combining Texts

All the ideas for 'Locke on Essences and Kinds', 'The Life of Reason' and 'A Priori Knowledge Revisited'

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9 ideas

1. Philosophy / C. History of Philosophy / 1. History of Philosophy

8000	He who is ignorant of the history of philosophy is doomed to repeat it [Santayana, by MacIntyre]

5. Theory of Logic / A. Overview of Logic / 6. Classical Logic

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Classical logic is our preconditions for assessing empirical evidence [Kitcher]

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I believe classical logic because I was taught it and use it, but it could be undermined [Kitcher]

9. Objects / D. Essence of Objects / 13. Nominal Essence

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If kinds depend only on what can be observed, many underlying essences might produce the same kind [Eagle]

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Nominal essence are the observable properties of things [Eagle]

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Nominal essence mistakenly gives equal weight to all underlying properties that produce appearances [Eagle]

10. Modality / D. Knowledge of Modality / 1. A Priori Necessary

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Many necessities are inexpressible, and unknowable a priori [Kitcher]

10. Modality / D. Knowledge of Modality / 2. A Priori Contingent

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Knowing our own existence is a priori, but not necessary [Kitcher]

26. Natural Theory / B. Natural Kinds / 4. Source of Kinds

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Kinds are fixed by the essential properties of things - the properties that make it that kind of thing [Eagle]