That ideology, whose criticism has served as an arm and an instrument for giving a juridical form to the economic organization of modern society, has had, consequently, various sources. Yet, in fact, this juridical ideology reflects, in the struggle for law and against law, the revolutionary period of the bourgeois spirit. And, although it takes its doctrinal point of departure in a return to the traditions of the ancient philosophy, in the generalization of Roman jurisprudence, in everything else, and in all its development, it is completely new and modern. Roman law, although it was generalized by scholasticism and by modern elaboration, still remains within itself a collection of special cases which have not been deduced according to a preconceived system, nor preordained by the systematic mind of the legislator. On the other hand, the rationalism of the stoics, their contemporaries and their disciples, was a work of pure contemplation, and it produced no revolutionary movement around it. The ideology of natural law, which finally took the name of philosophy of law, was, on the contrary, systematic, it started always from general formulae, it was aggressive and polemic, and still more, it was at war with orthodoxy, with intolerance, with privilege, with constituted bodies; in fine, it fought for the liberties which to-day constitute the formal conditions of modern society. It is with this ideology, which was a method of struggle, that arose for the first time, in a typical and decisive form, that idea that there is a law which is one and the same with reason. The laws against which the struggle was carried on appear as deviations, backward steps, errors. From this faith in rational law arose the blind belief in the power of the legislator, which grew into fanaticism at the critical moments of the French Revolution. Thence the belief that society as a whole is to be submitted to one single law, equal for all, systematic, logical, consistent. Thence the conviction that a law guaranteeing to all a legal equality, that is to say, the privilege of contracting, guaranteed also liberty to all. The triumph of true law assures the triumph of reason, and the society which is regulated by a law equal for all is a perfect society!