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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / c. not

16489

Is it possible to state every possible truth about the whole course of nature without using 'not'? [Russell]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / e. or

21676

Epicureans say disjunctions can be true whiile the disjuncts are not true [Epicurus, by Cicero]