Calvin's description of monks in his day
To find an application for this passage we need look no further than the monks, for though they are all completely unlearned asses, yet solely on account of their long robes and hoods they have the reputation of being learned men .... The excessively insolent pride of the monks comes chiefly from the fact that they measure themselves by themselves, and since in their cloisters there is nothing but barbarism, it is no wonder if the one-eyed man is king in the country of the blind.
John Calvin, Commentary on 2 Cor. 10:12