By Alexander of Aphrodisias
The final 14 chapters of e-book 1 of Aristotle's "Prior Analytics" are all in favour of the illustration within the formal language of syllogistic of propositions and arguments expressed in additional or much less daily Greek. In his observation on these chapters, "Alexander of Aphrodisias" explains a few of Aristotle's extra opaque assertions and discusses post-Aristotelian rules in semantics and the philosophy of language. In doing so he offers an strange perception into the best way those disciplines built within the Hellenistic period. He additionally indicates a extra refined figuring out of those fields than Aristotle himself, whereas closing a staunch defender of Aristotle's emphasis on that means rather than Stoics main issue with verbal formula. In his observation at the ultimate bankruptcy of ebook 1 Alexander deals an intensive dialogue of Aristotle's contrast among denying that whatever is, for instance, white and announcing that it truly is non-white.
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Extra resources for Alexander of Aphrodisias: On Aristotle Prior Analytics 1.32-46 (Ancient Commentators on Aristotle)
Someone, reaching here, might ask how the account given is s t i l l the definition of syllogism i f there are also other arguments i n w h i c h 31 15 20 25 30 35 350,1 5 Translation 'some things being posited something different from what is posited follows by necessity . . \ I n fact these arguments fail to satisfy the condition 'because these things are posited', as was said previously. F o r the necessity i n these arguments is not through the things posited, but derives from the fact that the universal, w h i c h is omitted, is true, and w h e n this is added, this argument also becomes a syllogism.
A n d i n this way the first combination i n the first figure, that is, the first syllo gism, w o u l d seem to be overthrown, if the conclusion is false w h e n the premisses are true. B u t the reason for this is that the premisses were not t a k e n syllogistically. F o r w h e n the premiss A B , w h i c h says that thinkable Aristomenes always is, is t a k e n indeterminately, i t can be true, but i f i t is t a k e n u n i v e r s a l l y and becomes ' E v e r y thinkable Aristomenes always is', i t is false.
It is true to say that it is possible that A holds of no B (since h e a l t h holds of no sickness), and again that B holds of a l l C (since every h u m a n being is subject to sickness). So it would seem to follow that it is possible that h e a l t h holds of no h u m a n being. The reason for this is that the terms are not set out w e l l verbally, since w h e n terms corresponding to the states are substituted there w i l l not be a syllogism; for example, i f being healthy is posited instead of health a n d being sick instead of sickness, since i t is not true to say that it is not possible that being healthy holds of one who is sick.