Combining Texts

All the ideas for 'Symbolic Reasoning', 'Consilience' and 'works'

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

21548

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

23. Ethics / C. Virtue Theory / 3. Virtues / d. Courage

15640

Courage is not a virtue, but the form of every virtue at its testing point [Lewis,CS]

24. Political Theory / A. Basis of a State / 1. A People / c. A unified people

20662

The biology of societies: kin selection, parenting, mating; status, territory, contracts [Wilson,EO]