Two Types of Ignorance

Plato, Laws 9.863c (tr. Trevor J. Saunders): The lawgiver would, in fact, do a better job if he divided ignorance into two: (1) 'simple' ignorance, which he would treat as the cause of trivial faults, (2) 'double' ignorance, which is the error of a man who is not only in the grip of ignorance but on top of that is convinced of his own wisdom, believing that he has a thorough knowledge of matters of which, in fact, his ignorance is total. διχῇ μὴν διελόμενος αὐτὸ ὁ νομοθέτης ἂν βελτίων εἴη, τὸ μὲν ἁπλοῦν αὐτοῦ κούφων ἁμαρτημάτων αἴτιον ἡγούμενος, τὸ δὲ διπλοῦν, ὅταν ἀμαθαίνῃ τις μὴ μόνον ἀγνοίᾳ συνεχόμενος ἀλλὰ καὶ δόξῃ σοφίας, ὡς εἰδὼς παντελῶς περὶ ἃ μηδαμῶς οἶδεν.