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Ἓν οἶδα, ὅτι οὐδὲν οἶδα → I know only one thing, that I know nothing | all I know is that I know nothing.
austrō: -nŏtius, ii, m. id. (sc. polus),I the south pole, Isid. Orig. 3, 32; 3, 36; 13, 5, 5 (in the latter passage also austrō-nŏtus).