Ἓν οἶδα, ὅτι οὐδὲν οἶδα → I know only one thing, that I know nothing | all I know is that I know nothing.
naufrăgo: āvi, 1, v. n. naufragus,
I to suffer shipwreck, be wrecked: omnes naves naufragārunt, Petr. 76, 4; Sid. Ep. 4, 21; Salv. Gub. Dei, 3, p. 77.