[6] Or “prove themselves good,” as in the Prior Analytics, ii 25, [Greek: apanta pisteuomen k.t l] but the other rendering is supported by a passage in Book VIII. chap. ix. [Greek: oi d’ upo ton epieikon kai eidoton oregomenoi timaes bebaiosai ten oikeian doxan ephientai peri auton chairousi de oti eisin agathoi, pisteuontes te ton legonton krisei] [7] [Greek: thesis] meant originally some paradoxical statement by any philosopher of name enough to venture on one, but had come to mean any dialectical question. Topics, I. chap. ix. [8] A lost work, supposed to have been so called, because containing miscellaneous questions. [9] It is only quite at the close of the treatise that Aristotle refers to this, and allows that [Greek: theoria] constitutes the highest happiness because it is the exercise of the highest faculty in man the reason of thus deferring the statement being that till the lower, that is the moral, nature has been reduced to perfect order, [Greek: theoria] cannot have place, though, had it been held out from the first, men would have been for making the experiment at once, without the trouble of self-discipline. [10] Or, as some think, “many theories have been founded on them.” [11] The ἰδέα is the archetype, the εἶδος the concrete embodying the resemblance of it; hence Aristotle alludes to the theory under both names, and this is the reason for retaining the Greek terms. [12] The list ran thus— [Greek: to peras to apeiron | to euthu to perisson to artion | to phos to en to plethos | to tetragonon to dexion to aristeron | to aeremoun to arren to thelu | to agathon ] [13] Plato’s sister’s son. [14] This is the capital defect in Aristotle’s eyes, who being eminently practical, could not like a theory which not only did not necessarily lead to action, but had a tendency to discourage it by enabling unreal men to talk finely. If true, the theory is merely a way of stating facts, and leads to no action. [15] _i.e._ the identification of Happiness with the Chief Good. [16] _i.e._ without the capability of addition. [17] And then Happiness would at once be shown not to be the Chief Good. It is a contradiction in terms to speak of adding to the Chief Good. See Book X. chap. 11. [Greek: delon os oud allo ouden tagathon an eiae o meta tenos ton kath’ auto agathon airetoteron ginetai.] [18] Compare Bishop Butler’s account of “Human Nature as a System” in the Preface to his Sermons. [19] _i.e._ as working or as quiescent. [20] The mere translation of this term would convey no idea of its meaning, I have therefore retained the Greek term. It is afterwards explained to include space of time and external appliances requisite for the full development of Man’s energies; here the time only is alluded to. [21] This principle is more fully stated, with illustrations, in the Topics, I. chap. ix.