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πάντοις

From LSJ

Ἓν οἶδα, ὅτι οὐδὲν οἶδα → I know only one thing, that I know nothing | all I know is that I know nothing.

Diogenes Laertius, Lives of the Philosophers, Book 2 sec. 32.

Greek (Liddell-Scott)

πάντοις: πᾶσι, Ἐπιγρ. Δελφ. DG 1652, 6 κ. ἀλλ.