This quotation is variously attributed to Eunapius (fr. 108 FHG [4.56] = Fragmenta Historica 1. p.274) and Damascius, Life of Isidore fr. 62 Zintzen (28 Asmus, 31 Athanassiadi). The list of contrasting qualities in the unnamed subject is perhaps reminiscent of Josephus' characterization of the Hasmonean rivals, Hyrcanus and Aristoboulus the younger (Jewish Antiquities 13.407, 14.8 & 13; cf. Zonaras, Epitome Historiarum 1 p.342-44).
[1] For the meaning of this term (which has generated the unglossed headword of the entry) see delta 1513 and delta 1514; and cf. delta 1488. Thucydides 2.63.3 (speech of Pericles) offers a famous instance of the neuter singular of this adjective -- there, as again here, with a definite article -- to refer to a quality in human character, i.e. 'the effective' = 'effectiveness', as translated here. Philosophers discussed to\ kalon, 'the quality or attribute of beauty', as the abstract concept 'beauty'. Here the phrase to\ ko/smion kai\ h(su/xion is translated as 'a disciplined and peaceful character', tou= a)ndrw/dous as 'manliness'.