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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.
ἀναιδής, ὑβριστικός, ὑπέρβιος, θαρσαλέος, θαρραλέος, λαμυρός, ἀσελγής, ὑβριστής, πλεονέκτης, θρασύς