Combining Texts

All the ideas for 'On Motion', 'works' and 'Philosophy in the Tragic Age of the Greeks'

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

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4 ideas

4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / a. Axioms for sets

9565	Zermelo made 'set' and 'member' undefined axioms [Zermelo, by Chihara]

3339	For Zermelo's set theory the empty set is zero and the successor of each number is its unit set [Zermelo, by Blackburn]

23. Ethics / F. Existentialism / 5. Existence-Essence

20130

It is absurd to think you can change your own essence, like a garment [Nietzsche]

27. Natural Reality / B. Modern Physics / 1. Relativity / a. Special relativity

12709

Motion is not absolute, but consists in relation [Leibniz]