ἐκκριτέον
From LSJ
ὕπνος δεινὸν ἀνθρώποις κακόν → sleep is a terrible evil for humans (Menander, Sententiae monostichoi 1.523)
English (LSJ)
A one must pick out, Pl.Plt.303b.
Greek (Liddell-Scott)
ἐκκρῐτέον: ῥημ. ἐπίθ., δεῖ ἐκκρίνειν, Πλάτ. Πολιτικ. 303Β.
Spanish (DGE)
hay que separar, hay que diferenciar πασῶν ... ἐκείνην (πολιτείαν) Pl.Plt.303b.