Combining Texts

All the ideas for 'Elucidation of some points in E.Schröder', 'Paradoxes: Form and Predication' and 'Letters to Pierre Bayle'

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

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3 ideas

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

14238

A class is an aggregate of objects; if you destroy them, you destroy the class; there is no empty class [Frege]

5. Theory of Logic / G. Quantification / 6. Plural Quantification

14235

Saying 'they can become a set' is a tautology, because reference to 'they' implies a collection [Cargile]

16. Persons / F. Free Will / 5. Against Free Will

19413

If we know what is good or rational, our knowledge is extended, and our free will restricted [Leibniz]