Philosophy Lexicon of Arguments

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Geach, Peter T.
 
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Necessity I 179
necessary / modal / Geach: it is even necessary necessary, that no one who is a brother is not male. Because if it were only contingently necessary , a non-male brother would still be a possible option, even if no real opportunity! (> NNa, MMa) - if Descartes had said that God would not necessarily have to create the necessity that a brother is male, he would have talked big nonsense.

Gea I
P.T. Geach
Logic Matters Oxford 1972


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Ed. Martin Schulz, access date 2017-03-27