Ἓν οἶδα, ὅτι οὐδὲν οἶδα → I know only one thing, that I know nothing | all I know is that I know nothing.
πιστός, ἀξιόχρεως, παραμόνιμος, παρμόνιμος, ἀξιόπιστος, βέβαιος, ἰσχυρός, ἄρκιος, ἀσφαλής, νημερτής, μόνιμος, ἄλυτος, ἐμβριθής, ἐχυρός, φερέγγυος, σαφής