Alexander of Aphrodisias: On Aristotle Prior Analytics by Alexander of Aphrodisias

Alexander of Aphrodisias: On Aristotle Prior Analytics by Alexander of Aphrodisias

By Alexander of Aphrodisias

The final 14 chapters of e-book 1 of Aristotle's "Prior Analytics" are focused on the illustration within the formal language of syllogistic of propositions and arguments expressed in additional or much less daily Greek. In his remark on these chapters, "Alexander of Aphrodisias" explains a few of Aristotle's extra opaque assertions and discusses post-Aristotelian principles in semantics and the philosophy of language. In doing so he presents an strange perception into the way those disciplines built within the Hellenistic period. He additionally indicates a extra refined realizing of those fields than Aristotle himself, whereas ultimate a staunch defender of Aristotle's emphasis on that means in preference to Stoics predicament with verbal formula. In his remark at the ultimate bankruptcy of e-book 1 Alexander deals a radical dialogue of Aristotle's contrast among denying that whatever is, for instance, white and saying that it's non-white.

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Additional info for Alexander of Aphrodisias: On Aristotle Prior Analytics 1.32-46 (Ancient Commentators on Aristotle)

Example text

B u t i f they do not prove one of the premisses syllogistically or prove i t i n some other way (as premisses assumed inductively for establishing a u n i v e r s a l premiss prove some­ thing), a n d they are not present for the sake of weight or something else useful, such as concealment or clarity, one should get r i d of them, reject them, i n the analyses of syllogisms as h a v i n g been assumed i n a n empty a n d void way. B u t i f these things were added for one of those reasons, one should even then d i s t i n g u i s h t h e m from the premisses for the conclusion i n the strict sense, but indicate the reason for w h i c h they are assumed.

F o r w h e n the terms are t a k e n i n this way, the contingent u n i v e r s a l affirmative premisses are true, but they are not true w h e n they are taken the other way. F o r the person who says that i t is possible that h e a l t h of every h u m a n being says what is equivalent to I t is possible that every h u m a n being is healthy', since he takes h e a l t h instead of being healthy. I n this way each of the premisses is true, but not because it is possible that a h u m a n being is either health or sickness.

35 350,10 20 H a v i n g shown how one should make the analysis of syllogisms, he now describes what things should be guarded against because they can lead us astray into t h i n k i n g that non-syllogisms are syllogisms. For i f we k n o w this is to be guarded against, we w i l l not labour i n a n empty way by t r y i n g to analyze non-syllogisms as i f they were syllo­ gisms. So first we should not just attend to the fact that what is inferred follows necessarily from what is assumed and t h i n k straight Translation away that the argument is a syllogism, since i n this w a y a mistake results.

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