Combining Texts

All the ideas for 'Necessary Existents', 'De modo distinguendi phaenomena' and 'Whitehead and the Rise of Modern Logic'

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6 ideas

5. Theory of Logic / A. Overview of Logic / 7. Second-Order Logic
13639 Quine says higher-order items are intensional, and lack a clearly defined identity relation [Quine, by Shapiro]
6. Mathematics / C. Sources of Mathematics / 6. Logicism / b. Type theory
21557 Russell confused use and mention, and reduced classes to properties, not to language [Quine, by Lackey]
7. Existence / D. Theories of Reality / 2. Realism
12741 If experience is just a dream, it is still real enough if critical reason is never deceived [Leibniz]
12740 The strongest criterion that phenomena show reality is success in prediction [Leibniz]
12. Knowledge Sources / B. Perception / 2. Qualities in Perception / e. Primary/secondary critique
12721 Light, heat and colour are apparent qualities, and so are motion, figure and extension [Leibniz]
19. Language / D. Propositions / 3. Concrete Propositions
19216 Propositions (such as 'that dog is barking') only exist if their items exist [Williamson]