Combining Texts

All the ideas for 'Symbolic Reasoning', 'Some Main Problems of Philosophy' and 'De modo distinguendi phaenomena'

expand these ideas     |    start again     |     specify just one area for these texts

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5 ideas

1. Philosophy / D. Nature of Philosophy / 5. Aims of Philosophy / c. Philosophy as generalisation

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The main aim of philosophy is to describe the whole Universe. [Moore,GE]

4. Formal Logic / F. Set Theory ST / 3. Types of Set / b. Empty (Null) Set

21548

The null class is the class with all the non-existents as its members [MacColl, by Lackey]

7. Existence / D. Theories of Reality / 2. Realism

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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

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Light, heat and colour are apparent qualities, and so are motion, figure and extension [Leibniz]