Combining Texts

All the ideas for 'Locke on Essences and Kinds', 'The Life of Reason' and 'Conditionals and Possibilia'

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6 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]

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

15642

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

15645

Nominal essence are the observable properties of things [Eagle]

15643

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

10. Modality / B. Possibility / 8. Conditionals / c. Truth-function conditionals

13858

The truth-functional account of conditionals is right, if the antecedent is really acceptable [Jackson, by Edgington]

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]