We must presume Syllogisms without a middle term, when we read:--"The Syllogism through a middle term is _by nature_ prior, and of greater cognitive efficacy; but _to us_ the Syllogism through Induction is plainer and clearer."[66] Nor, indeed, is the saying, when literally taken, at all well-founded; for the pretended Syllogisms from Induction and Example, far from being clear and plain, are more involved and difficult to follow than _Barbara_ and _Celarent_. Yet the substance of Aristotle's thought is true and important, when considered as declaring the antithesis (not between varieties of Syllogisms, but) between Induction and Example on the one part, and Syllogism (Deduction) on the other. It is thus that he sets out the same antithesis elsewhere, both in the Analytica Posteriora and the Topica.[67] Prior and more cognizable _by nature_ or _absolutely_, prior and more cognizable _to us_ or _in relation to us_--these two are not merely distinct, but the one is the correlate and antithesis of the other. [Footnote 66: Analyt. Prior. II. xxiii. p. 68, b. 35: [Greek: phu/sei me\n ou)=n pro/teros kai\ gnôrimô/teros o( dia\ tou= me/sou sullogismo/s, ê(mi=n d' e)narge/steros o( dia\ tê=s e)pagôgê=s.]] [Footnote 67: Analyt. Post. I. ii. p. 72, a. 2, b. 29; Ethic. Nik. VI. iii**. p. 1139, b. 28: [Greek: ê( me\n dê\ e)pagôgê\ a)rchê/ e)sti kai\ tou= katho/lou=, o( de\ sullogismo\s e)k tô=n katho/lou. ei)si\n a)/ra a)rchai\ e)x ô(=n o( sullogismo/s, ô(=n ou)k e)/sti sullogismo/s; e)pagôgê\ a)/ra.] Compare Topica, I. xii. p. 105, a. 11; VI. iv. pp. 141, 142**; Physica, I. i. p. 184, a. 16; Metaphysic. E. iv. p. 1029, b**. 4-12. Compare also Trendelenburg's explanation of this doctrine, Erläuterungen zu den Elementen der Aristotelischen Logik, sects. 18, 19, 20, p. 33, seq.]