ὀλβιόω

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)

ὀλβιόω: καθιστῶ ὄλβιον, ἢ θεωρῶ ὄλβιον, ὀλβίζω, Μ. Φιλῆς τ. Α΄, σ. 149. 192. 262. 282, τ. Β΄, σ. 113, ἔκδ. Mil.