Combining Texts

All the ideas for 'Theory of Knowledge (2nd edn)', 'On the Reduction of Necessity to Essence' and 'The Principles of Chemistry'

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8 ideas

1. Philosophy / C. History of Philosophy / 4. Later European Philosophy / b. Seventeenth century philosophy

2945	Most philosophers start with reality and then examine knowledge; Descartes put the study of knowledge first [Lehrer]

1. Philosophy / F. Analytic Philosophy / 4. Conceptual Analysis

2946	You cannot demand an analysis of a concept without knowing the purpose of the analysis [Lehrer]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives

16974

The nature of each logical concept is given by a collection of inference rules [Correia]

10. Modality / A. Necessity / 6. Logical Necessity

16973

Explain logical necessity by logical consequence, or the other way around? [Correia]

27. Natural Reality / B. Modern Physics / 4. Standard Model / a. Concept of matter

17402

Mendeleev saw three principles in nature: matter, force and spirit (where the latter seems to be essence) [Mendeleev, by Scerri]

27. Natural Reality / F. Chemistry / 2. Modern Elements

17399

Elements don't survive in compounds, but the 'substance' of the element does [Mendeleev]

27. Natural Reality / F. Chemistry / 3. Periodic Table

17400

Mendeleev focused on abstract elements, not simple substances, so he got to their essence [Mendeleev, by Scerri]

17401

Mendeleev had a view of elements which allowed him to overlook some conflicting observations [Mendeleev]