Porphyry and Dexippus tell us (Schol. ad Categ. p. 45, a. 6-30) that both Aristotle and the Stoics distinguished [Greek: prô=ton u(pokei/menon] and [Greek: deu/teron u(pokei/menon]. The [Greek: prô=ton u(pokei/menon] is [Greek: ê( a)/poios u(/lê--to\ duna/mei sô=ma], which Aristotle insists upon in the Physica and Metaphysica, the [Greek: deu/teron u(pokei/menon, o(\ koinô=s poio\n ê)\ i)di/ôs u(phi/statai], coincides with the [Greek: prô/tê ou)si/a] of the Categories, already implicated with [Greek: ei)=dos] and stopping short of metaphysical analysis. The remarks of Boêthus and Simplikius upon this point deserve attention. Schol. pp. 50-54, Br.; p. 54, a. 2: [Greek: ou) peri\ tê=s a)sche/tou u(/lês e)sti\n o( parô\n lo/gos, a)lla\ tê=s ê)/dê sche/sin e)chou/sês pro\s to\ ei)=dos. to\ de\ su/ntheton dêlo/noti, o(/per e)sti\ to\ a)/tomon, e)pide/chetai to\ to/de.] They point out that the terms Form and Matter are not mentioned in the Categories, nor do they serve to illustrate the Categories, which do not carry analysis so far back, take their initial start from [Greek: to/de ti], the [Greek: su/ntheton] of Form and Matter,--[Greek: ou)si/a kuriô/tata kai\ prô/tôs kai\ ma/lista legome/nê]. Simplikius says (p. 50, a. 17):--[Greek: dunato\n de\ tou= mê\ mnêmoneu=sai tou= ei)/dous kai\ tê=s u(/lês ai)/tion le/gein, kai\ to\ tê\n tô=n Katêgoriô=n pragmatei/an _kata\ tê\n pro/cheiron kai\ koinê\n tou= lo/gou chrê=sin_ poiei=sthai; to\ de\ tê=s u(/lês kai\ tou= ei)/dous o)/noma kai\ ta\ u(po\ tou/tôn sêmaino/mena ou)k ê)=n toi=s polloi=s sunê/thê], &c. Compare p. 47, a. 27. This what Dexippus says also, that the Categories bear only upon [Greek: tê\n prô/tên chrei/an tou= lo/gou kath' ê(\n ta\ pra/gmata dêlou=n a)llêlois e)phie/metha] (p. 13, ed. Spengel; also p. 49). Waitz, ad Categor. p. 284. "In Categoriis, non de ipsâ rerum naturâ et veritate exponit, sed res tales capit, quales apparent in communi vitâ homini philosophiâ non imbuto." We may add, that Aristotle applies the metaphysical analysis--Form and Matter--not only to the Category [Greek: ou)si/a] but also to that of [Greek: poio\n] and [Greek: poso/n] (De Coelo, iv. 312, a. 14.)] [Footnote 71: Aristot. Metaph. [Greek: D]. 1017, a. 23. [Greek: o(sachô=s ga\r le/getai, tosautachô=s to\ ei)=nai sêmai/nei].]