Combining Texts

All the ideas for 'Laudatio: Prof Ruth Barcan Marcus', 'Universals' and 'Letters to Queen Charlotte'

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9 ideas

4. Formal Logic / D. Modal Logic ML / 7. Barcan Formula
15130 If a property is possible, there is something which can have it [Williamson]
6. Mathematics / B. Foundations for Mathematics / 4. Axioms for Number / a. Axioms for numbers
23026 We know mathematical axioms, such as subtracting equals from equals leaves equals, by a natural light [Leibniz]
8. Modes of Existence / D. Universals / 1. Universals
8495 The distinction between particulars and universals is a mistake made because of language [Ramsey]
8493 We could make universals collections of particulars, or particulars collections of their qualities [Ramsey]
8. Modes of Existence / E. Nominalism / 1. Nominalism / a. Nominalism
8494 Obviously 'Socrates is wise' and 'Socrates has wisdom' express the same fact [Ramsey]
9. Objects / D. Essence of Objects / 7. Essence and Necessity / b. Essence not necessities
13189 A necessary feature (such as air for humans) is not therefore part of the essence [Leibniz]
10. Modality / D. Knowledge of Modality / 1. A Priori Necessary
19432 Intelligible truth is independent of any external things or experiences [Leibniz]
12. Knowledge Sources / B. Perception / 2. Qualities in Perception / d. Secondary qualities
19430 We know objects by perceptions, but their qualities don't reveal what it is we are perceiving [Leibniz]
12. Knowledge Sources / D. Empiricism / 1. Empiricism
19431 There is nothing in the understanding but experiences, plus the understanding itself, and the understander [Leibniz]