The next demand of the plebeians was for privileges depending on public rights. Of these they gained first the _imperium_ together with the consulship, and lastly the offices of priest and pontifex, which carried with them knowledge of the law. In this way the system of seigneurial liberty planned by Servius Tullius grew into a system of popular liberty, and the census, which was originally paid to the patricians, was paid hereafter into the public treasury, out of which the expenses of the plebeians in war were paid. The tribunes now proceeded to demand the power of legislation; for the previous laws, the Horatian and Hortensian, had not made plebiscites binding on the whole people, except upon the two special occasions which led to the secession of the plebs to the Aventine and Janiculum respectively. This new victory, which established the superiority of the plebs and transformed the aristocratic into a popular republic, was the Publilian law due to the Dictator Publilius Philo and decreeing that plebiscites should "be binding on all the Quirites" (_omnes quirites tenerent_). The authority of the senate came out of the struggle somewhat impaired, for while formerly the fathers had acted as "_auctores_" for the deliberations of the people, they were now the proposers of law to the people, which the latter then approved according to the formula submitted to them by the senate, or else "antiquated" the proposal (_antiquo,_ to vote against a measure) and decided to make no innovation. Besides this, the plebs won the last office to be conceded to them, that of censor. The Petelian law, a few years later, abolished the last remnant of feudalism, the bond (_nexus_) which made the plebeians the bondmen of the nobles for debt and often compelled them to spend their lives working in their private prisons.