διηθητέον
From LSJ
κάλλιστον ἐφόδιον τῷ γήρᾳ ἡ παιδεία (Aristotle, quoted by Diogenes Laertius 5.21) → the finest provision for old age is education
English (LSJ)
one must strain, Dsc.2.76.6.
Spanish (DGE)
hay que verter, hay que echar κηροῦ Τυρρηνικοῦ ὁλκὰς τέτταρας Dsc.2.76.6, cf. Orib.12.18.47.
Greek (Liddell-Scott)
διηθητέον: ῥημ. ἐπίθ. τοῦ διηθῶ, Διοσκ. 2. 89.