Ἓν οἶδα, ὅτι οὐδὲν οἶδα → I know only one thing, that I know nothing | all I know is that I know nothing.
plostellum: i, n.
dim. plostrum, plaustrum,
I a small wagon or cart: plostellum Poenicum, Varr. R. R. 1, 52: plostello adjungere mures, Hor. S. 2, 3, 247; Aug. Civ. Dei, 7, 21.
plōstellum, plōstrārius, v. plaust-.