μόνον τὸ καλὸν ἀγαθὸν εἶναι → only the beautiful is the good, only the morally beautiful is good
ardus arda -um, ardior -or -us, ardissimus -a -um ADJ :: dry, arid, parched; water/rain-less; used dry, dried; thirsty; poor; shriveled
ardus: a, um, adj., v. aridus.
ārdus, a, um, s. aridus.