 The teachers of this most famous "school of Bologna" acted according to a method of medieval study, the one of glosses or commentary of the content and meaning of justinian texts.They are not critical commentaries, but rather, analytical.The bolognian professors accept justinian law as something superior, even supreme; they are limited to comment on it, without too much critical baggage, because for that they needed philological command of Greek language and study of original texts and historical knowledge, in which they were lacking.