ἀνερωτητέον
From LSJ
τους φίλους λόγων τέχναιν επαίδευσας → Using 2 artifices, you educated (taught) those who love rhetoric.
English (LSJ)
one must interrogate, Id.Phlb.63c.
Spanish (DGE)
hay que preguntar por τὴν φρόνησιν καὶ τὸν νοῦν Pl.Phlb.63c.
Greek (Liddell-Scott)
ἀνερωτητέον: ῥηματ. ἐπίθ., τοῦ προηγ., δεῖ ἀνερωτᾶν, Πλάτ. Φίλ. 63C.