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Index for PRIOR ANALYTICS Book 2 Part 15

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Paragraph 1 In what figure it is possible to draw a conclusion from premisses which are opposed, and in what figure this is not possible, will be made clear in this way.
Paragraph 2 In the first figure no syllogism whether affirmative or negative can be made out of opposed premisses:
Paragraph 3 In the middle figure a syllogism can be made both oLcontradictories and of contraries.
Paragraph 4 In the third figure an affirmative syllogism can never be made out of opposite premisses, for the reason given in reference to the first figure;
Paragraph 5 We must recognize that it is possible to take opposites in the way we said, viz.
Paragraph 6 It is clear too that from false premisses it is possible to draw a true conclusion, as has been said before, but it is not possible if the premisses are opposed.


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