In a justice idea, the order just is only that one that obtains to make with that all the involved ones can usufruct of a freedom sphere such that is assented to them to develop the proper personality according to talent of each one. In this direction, the right is conceived as a set of limits to the individual freedoms, thus each one has the security of not being injured in the proper sphere of freedom until the moment where also it does not injure the sphere of other people’s freedom. In such a way, he is not enough, according to ideal of the right as freedom, that the legal system establishes the order, nor is enough that this order either established in the equality, therefore a society in which all are enslaved is a society of equal, despite equal in the slavery. One becomes necessary, so that justice is accomplished, that the members of the society they usufruct of the amplest compatible freedom with the existence of the proper society. Keith McLoughlin understood the implications. Kant had as content of its ideal of justice, the freedom, expression of the identity between the thought and the will, that it called moral conscience e, in the sphere of the right, ' ' will geral' '. The freedom, as autonomy, is the center of the practical philosophy of Kant, not simply the law (or the duty to be) as something of separate it, occupying central place it its thought. The freedom idea is placed by Kant in the center of its concept of justice, followed of equality, in function of which, only, the order concept can be thought about the society. Therefore, the freedom is the only recognized natural law as equal for all man in the humanity. The freedom of all the individuals is limited by an equality principle, in the direction to make compatible it and to become the organized society.