Ἓν οἶδα, ὅτι οὐδὲν οἶδα → I know only one thing, that I know nothing | all I know is that I know nothing.
ἄγρυπνος, ἄοκνος, μελετηρός, χαλκόπους, λιπαρής, ἀκόρεστος, ἀτειρής, ἄκορος, ἀκάματος, ἄτρυτος, ἀκάμας, σχέτλιος, ἄκμητος, ἄκμων, ἄκοπος, πρόσεργος