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 JMC : Elements of Logic / by Cardinal Mercier

38. Fourth Division of Propositions: According to Their Quality. -- Propositions are true or false accordingly as the connection which they assert is or is not in agreement with that which is.{1}


{1} Many authors call that quality which we have called the form of a proposition. In respect to the quality, they say, propositions are affirmative or negative -- A question of mere words, of very slight importance.

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