By Alexander of Aphrodisias

Aristotle's themes is set dialectic, which might be understood as a debate among humans or the internal debate of 1 philosopher with himself. Its reasons diversity from philosophical education to studying the 1st ideas of idea. Its arguments trouble the 4 predicables (definition, estate, genus and accident). Aristotle explains how those 4 healthy into his ten different types, and in e-book 1 starts to stipulate thoughts for debate, reminiscent of the definition of ambiguity. Alexander's observation on ebook 1 discusses how to find Aristotelian syllogistic argument, why it stands up opposed to the rival Stoic conception of interference, and what's the nature of inductive interference and of rhetorical argument. He distinguishes inseparable injuries corresponding to the whiteness of snow from defining differentiae resembling its being frozen, and considers how those healthy into the scheme of different types. He speaks of dialectic as a stochastic self-discipline during which luck is to be judged no longer through victory yet by way of ability in argument, a view parallel to that typically taken in antiquity of clinical perform. And he investigates the topic of ambiguity which had additionally been richly built on the grounds that Aristotle by means of the rival Stoic university.

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Extra resources for On Aristotle Topics 1 (Ancient Commentators on Aristotle)

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Therefore DH and HE, the two sides of the triangle, are equal253 to DE, the basis of the triangle. Through this he proves that two sides of a triangle are equal to the third. In doing so he has neither drawn the semicircles ‘correctly’ – for they can never touch each other at H, but only at C, which provided the point of departure for drawing them – nor drawn the lines ‘as they should be drawn’ – for no lines can be drawn from the point at which the semi-circles touch, to their centres, so as to form a triangle: the lines drawn from the point of contact are the same as those254 on which the centres lie, their point of contact being at C.

However, surface is seen to have length and width; therefore it cannot have depth; therefore it has just the two dimensions length and width. By using the same argument, the dialectician will also prove that a line is length without width. For being a limit of a surface, it is not itself a surface; but it is seen to have length: therefore it will be length without width. And since the line, having length, has just one limit, and this is other than it, the point cannot even have that dimension. 286 Another way to argue about the point by what is approved is as follows.

So his not mentioning this either makes it plausible for him to say ‘in outline’. Or he says ‘as in outline’ because there are also species of syllogisms constituted by the different figures. ] (101a19-24) After saying of the syllogisms ‘let their species in outline, then, be those mentioned’, Aristotle adds that it must be specified and remembered ‘about all the things which have been and will be said’ in general, that259 ‘we do not choose to give of any of them the account that is accurate’ and scientific and demonstrative, but a more general one in the form of an outline,260 because ‘for the method before us’, which is dialectic, it is quite sufficient to ‘be able in one way or another to recognize each item’ that is mentioned.

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