Combining Texts

All the ideas for 'Necessary Existents', 'Building Blocks of Mathematical Logic' and 'De modo distinguendi phaenomena'

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5 ideas

5. Theory of Logic / E. Structures of Logic / 4. Variables in Logic

17699

Variables are auxiliary notions, and not part of the 'eternal' essence of logic [Schönfinkel]

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]