Ask at the forum if you have an Ancient or Modern Greek query!
Ἓν οἶδα, ὅτι οὐδὲν οἶδα → I know only one thing, that I know nothing | all I know is that I know nothing.
P. and V. λυπηρῶς, ἀλγεινῶς. ἀνιαρῶς (Xen.), κακῶς, see grievously.