Ἀνθρώποισι γὰρ τοῖς πᾶσι κοινόν ἐστι τοὐξαμαρτάνειν → It is common to all of humanity to make mistakes
cross examine: P. and V. ἐλέγχειν, ἐξελέγχειν.
ask: P. and V. ἐρωτᾶν, ἀνερωτᾶν, V. ἱστορεῖν, ἀνιστορεῖν ἐξιστορεῖν; see ask.