Combining Philosophers

All the ideas for H.Putnam/P.Oppenheim, Friedrich Jacobi and Hermann Weyl

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5 ideas

2. Reason / D. Definition / 1. Definitions
15927 Definition just needs negation, known variables, conjunction, disjunction, substitution and quantification [Weyl, by Lavine]
14. Science / D. Explanation / 2. Types of Explanation / j. Explanations by reduction
20653 Six reduction levels: groups, lives, cells, molecules, atoms, particles [Putnam/Oppenheim, by Watson]
23. Ethics / C. Virtue Theory / 3. Virtues / g. Contemplation
7071 Life and rationality are pointless if we can only contemplate the freedom of our own ego [Jacobi]
23. Ethics / F. Existentialism / 2. Nihilism
7072 Jacobi was the first philosopher to talk of nihilism [Jacobi, by Critchley]
26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / e. Anti scientific essentialism
10246 The limit of science is isomorphism of theories, with essences a matter of indifference [Weyl]