The jurists of the early Principate were divided into two groups, the Proculians and the Sabinians, but the nature of the division has proved to be a perennial problem of Roman legal history. Pomponius tells us that the Proculians regarded Labeo as their founder and the Sabinians Capito, and he gives lists of their respective leaders for more than a century. Furthermore, we know of more than two dozen particular problems which provoked disputes between the two groups. But the sources provide little express evidence as to the underlying opposing principles, if indeed there were any, which were espoused by them. Pomponius says that Labeo and Capito “first made, as it were, two sects: for Ateius Capito held fast to what had been handed down to him, whereas Labeo, a genius, with confidence in his own scholarship, a man who had studied several other branches of knowledge, set out to make many innovations” (D.1.2.2.47). Yet, when the various controversies are considered, the school of Labeo does not seem to champion doctrines which are especially progressive and that of Capito does not seem particularly conservative.