[The Plebeian] assemblies did not at first occupy themselves with the general interests of the city; they named no magistrates, and passed no laws. T… - Numa Denis Fustel de Coulanges

The ancient city, like all human society, had ranks, distinctions, and inequalities. We know the distinction originally made at Athens between the Eupatnids and the Thetes; at Sparta we find the class of Equals and that of the Inferiors; and in Euboea, that of the Knights and that of the People. The history of Rome is full, of the struggles between the Patricians and Plebeians, struggles that we find in all the Sabine, Latin, and Etruscan cities. We can even remark that the higher we ascend in the history of Greece and, Italy the more profound and the more strongly marked the distinction appears — a positive proof that the inequality did not grow up with time, but that it existed from the beginning, and that it was contemporary with the birth of cities.

[I]t does not appear that these men aspired at first to share the laws and rights of the patricians. Perhaps they thought, with the patricians themselves, that there could "be nothing in common between the two orders. No one thought of civil and political equality. That the plebeians could raise themselves to the level of the patricians, never entered the minds of the plebeian of the first centuries any more than it occurred to the patricians. ...[T]hese men seem to have preferred, at first, complete separation. In Rome they found no remedy for their sufferings; they saw but one means of escaping from their inferiority — this was to depart from Rome. ...In view of such an act the senate was divided in opinion. The more ardent of the patricians showed clearly that the departure of the plebs was far from afflicting them.. Thenceforth the patricians alone would remain at Rome with the clients that were still faithful to them. Rome would renounce its future grandeur, but the patricians would be masters there. They would no longer have these plebeians to trouble them, to whom the rules of ordinary government could not be applied, and who were an embarrassment to the city. ...But others, less faithful to old principles, or solicitous for the grandeur of Rome, were afflicted at the departure of the plebs. Rome would lose half its soldiers. What would become of it in the midst of the Latins, Sabines, and Etruscans — all enemies? The plebs had good qualities; why could not these be made use of for the interests of the city? These senators desired, therefore, at a cost of a few concessions, of which they did not perhaps see all the consequences, to bring back to the city those thousands of arms that made the strength of the legions. On the other side, the plebs perceived, at the end of a few months, that they could not live upon the Sacred Mount. They procured, indeed, what was materially necessary for existence, but all that went to make up an organized society was wanting. They could not found a city there, because they could not find a priest who knew how to perform the religious ceremony of the foundation. They could not elect magistrates, for they had no prytaneum with its perpetual fire, where the magistrate might sacrifice. They could find no foundation for social laws, since the only laws of which men then had any idea were derived from the patrician religion. In a word, they had not among them the elements of a city. The plebs saw clearly that by being more independent they were not happier; that they did not form a more regular society than at Rome; and that the problem, whose solution was so important to them, was not solved. ...It was found, therefore, that the plebs and patricians, though they had almost nothing in common, could not live without each other. They came together and concluded a treaty of alliance. This treaty appears to have been made on the same terms as those which terminate a war between two different peoples. Plebeians and patricians were indeed neither the same people nor the same city. By this treaty the patrician did not agree that the plebeian should make a part of the religious and political city; it does not appear that the plebs demanded it. They agreed merely that in the future the plebs, having been organized into something like a regular society, should have chiefs taken from their own number. This is the origin of the tribuneship of the plebs — an entirely new institution, which resembled nothing that the city had known before.

Thus the ancient city was transformed by degrees. In the beginning it was an association of some hundred chiefs of families. Later the number of citizens increased, because the younger branches obtained a position of equality. Later still, the freed clients, the plebs, all that multitude which during centuries had remained outside the political and religious association, sometimes even outside the sacred enclosure of the city, broke down the barriers which were opposed to them, and penetrated into the city, where they immediately became the masters.