Aristotle - The Organon - index for ANALYTICA PRIORIA Book 1 Part 1

Perfect and imperfect syllogisms

Paragraph 1 We must first state the subject of our inquiry and the faculty to which it belongs:
Paragraph 2 A premiss then is a sentence affirming or denying one thing of another.
Paragraph 3 I call that a term into which the premiss is resolved, i.e. both the predicate and that of which it is predicated, 'being' being added and 'not being' removed, or vice versa.
Paragraph 4 A syllogism is discourse in which, certain things being stated, something other than what is stated follows of necessity from their being so.
Paragraph 5 I call that a perfect syllogism which needs nothing other than what has been stated to make plain what necessarily follows;
Paragraph 6 That one term should be included in another as in a whole is the same as for the other to be predicated of all of the first.

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