2. [Greek: To\ o)\n ô(s a)lêthe/s, kai\ to\ mê\ o)\n ô(s pseu=dos]--_Ens_, in the sense /of Truth, _Non-Ens_, in the sense of Falsehood. This is the _Ens_ of the Proposition; a true affirmation or denial falls under _Ens_ in this mode, when the mental conjunction of terms agrees with reality; a false affirmation or denial, where no such agreement exists, falls under _Non-Ens_.[14] [Footnote 14: Aristot. Metaph. E. 4, p. 1027, b. 18,--p. 1028, a. 4. [Greek: ou) ga\r e)sti to\ pseu=dos kai\ to\ a)lêthe\s e)n toi=s pra/gmasin--a)ll' e)n dianoi/a|--ou)k e)/xô dêlou=sin ou)=sa/n tina phu/sin tou= o)/ntos.] Also [Greek: Th]. 10, p. 1051, b. 1: [Greek: to\ kuriô/tata o)\n a)lêthes kai\ pseu=dos]. In a Scholion, Alexander remarks: [Greek: to\ de\ ô(s a)lêthô=s o)\n pa/thos e)sti\ kai\ bou/lêma dianoi/as, to\ de\ zêtei=n to\ e(ka/stô| dokou=n ou) spho/dra a)nagkai=on.]] 3. [Greek: To\ o)\n duna/mei kai\ to\ o)\n e)nergei/a|]--_Ens_, potential, actual. 4. [Greek: To\ o)\n kata\ ta\ schê/mata tô=n katêgoriô=n]--_Ens_, according to the ten varieties of the Categories, to be presently explained. These four are the principal aspects under which Aristotle looks at the aggregate comprised by the equivocal or multivocal word _Entia_. In all the four branches, the varieties comprised are not species under a common genus, correlating, either as co-ordinate or subordinate, one to the other; they are _analoga_, all having relationship with a common term, but having no other necessary relationship with each other. Aristotle does not mean that these four modes of distributing this vast aggregate, are the only modes possible; for he himself sometimes alludes to other modes of distributions.[15] Nor would he maintain that the four distributions were completely distinguished from each other, so that the same subordinate fractions are not comprehended in any two; for on the contrary, the branches overlap each other and coincide to a great degree, especially the first and fourth. But he considers the four as discriminating certain distinct aspects of _Entia_ or _Entitas_, more important than any other aspects thereof that could be pointed out, and as affording thus the best basis and commencement for the Science called Ontology. [Footnote 15: Aristot. Metaph. [Greek: G]. p. 1003, a. 33, b. 10. Compare the able treatise of Brentano, "Ueber die Bedeutung des Seienden nach Aristoteles," pp. 6, 7.]