Combining Texts

All the ideas for 'Issues of Pragmaticism', 'Sociobiology' and 'Symbolic Reasoning'

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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]

19. Language / A. Nature of Meaning / 1. Meaning

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The meaning or purport of a symbol is all the rational conduct it would lead to [Peirce]

22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / d. Biological ethics

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Genetic behaviours that have enhanced human success include aggression, rape and xenophobia [Wilson,EO, by Okasha]