Combining Texts

All the ideas for 'Truth (frags)', 'Symbolic Reasoning' and 'Letter on Freedom'

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2 ideas

2. Reason / B. Laws of Thought / 2. Sufficient Reason

5042	For every event it is possible for an omniscient being to give a reason for its occurrence [Leibniz]

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]