In this work, we exam the political philosophy of Marsilius of Padua from the perspective of a possible immanentization of the spheres which compose his general theory of the State. The notion of immanentization used in this work is broad, but refers in general to the defense of an autonomy of the temporal over the spiritual sphere (that is, that there are things which are inherent to the first and which should be sought by itself). The work is divided into two major groups: in the first, we seek to present the general elements of the Paduan's thought (both political and ecclesiological), so that in the second group we can look over them essentially by what we consider to be the renovatio marsiliana. Such renovatio would be precisely this i...