Martin Luther's formula for ignorance . . . "There is on earth among all dangers no more dangerous thing than a richly endowed and adroit reason, especially if she enters into spiritual matters which concern the soul and God. For it is more possible to teach an ass to read than to blind such a reason and lead it right; for reason must be deluded, blinded, and destroyed." "Faith must trample underfoot all reason, sense, and understanding, and whatever it sees it must put out of sight, and wish to know nothing but the word of God." They do not call it ignorance without reason. Ignore + -ance i.e., ignore the truth.