Ἓν οἶδα, ὅτι οὐδὲν οἶδα → I know only one thing, that I know nothing | all I know is that I know nothing.
ἀπαρτί, ἀτρεκῶς, αὐτό, αὐτὸ τοῦτο, ἄχρι, δή, δῆτα