Combining Texts

All the ideas for 'Lysis', 'Letters to Queen Charlotte' and 'Comment on Armstrong and Forrest'

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9 ideas

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
15453 The main rivals to universals are resemblance or natural-class nominalism, or sparse trope theory [Lewis]
9. Objects / C. Structure of Objects / 1. Structure of an Object
15452 We could not uphold a truthmaker for 'Fa' without structures [Lewis]
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]
22. Metaethics / C. The Good / 1. Goodness / a. Form of the Good
295 The good is beautiful [Plato]
23. Ethics / C. Virtue Theory / 4. External Goods / d. Friendship
294 People say that friendship exists only between good men [Plato]