Return to Aristotle, Prior Analytics
It is evident, therefore, that there is not a syllogism of the being present with, unless both propositions signify the being present with; but that a necessary conclusion may be collected, though the other proposition alone is necessary. But in both, the syllogisms being either affirmative or privative, it is necessary that one of the propositions should be similar to the conclusion. My meaning is with respect to the similar; that if it is concluded a thing is present with, one of the propositions also signifies the being present with. But if it is concluded that a thing is necessarily present, one of the propositions is also necessary. Hence it is evident, that there will not be a conclusion either necessary, or that a thing is present with, unless one of the propositions is assumed necessary, or signifying the being present with. Concerning the necessary, therefore, how it is produced, and what difference it has with respect to that which is present with, nearly what is sufficient has been said.
Return to Aristotle, Prior Analytics
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