ἀνερωτητέον
From LSJ
ψυχῆς πείρατα ἰὼν οὐκ ἂν ἐξεύροιο πᾶσαν ἐπιπορευόμενος ὁδόν· οὕτω βαθὺν λόγον ἔχει → one would never discover the limits of soul, should one traverse every road—so deep a measure does it possess
English (LSJ)
A one must interrogate, Id.Phlb.63c.
Greek (Liddell-Scott)
ἀνερωτητέον: ῥηματ. ἐπίθ., τοῦ προηγ., δεῖ ἀνερωτᾶν, Πλάτ. Φίλ. 63C.
Spanish (DGE)
hay que preguntar por τὴν φρόνησιν καὶ τὸν νοῦν Pl.Phlb.63c.