 All its decisions had the force of canon law whether they were authentic or not, whatever the juridical value of the texts considered in themselves, and whatsoever the original text.It is a unique collection; all its decisions were simultaneously promulgated, and are equally obligatory, even if they appear to contain, or if in fact they do contain, antinomies, i. e. contradictions.In this peculiar case it is not possible to overcome the difficulty by recourse to the principle that a law of later date abrogates that of an earlier period.