## Why do singular propositions have a universal quantity?

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Why do singular propositions have a universal quantity?
Singular propositions like Amy is woman.
Why do we treat them as if they referred to classes of things?

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In origin, Syllogism was defined for Categorical proposition i.e. for proposition like "All men are mortal" withe "term" class.

– Mauro ALLEGRANZA – 2017-06-30T11:21:39.077