Pico's "De animae immortalitate" (Paris, 1541), and other works, developed the doctrine that man's possession of an immortal soul freed him from the hierarchical stasis. Pico believed in universal reconciliation, as one of his 900 theses was "A mortal sin of finite duration is not deserving of eternal but only of temporal punishment;" it was among the theses pronounced heretical by Pope Innocent VIII in his bull of 4 August 1487. In the "Oration" he argues, in the words of Pier Cesare Bori, that "human vocation is a mystical vocation that has to be realized following a three stage way, which comprehends necessarily moral transformation, intellectual research and final perfection in the identity with the absolute reality. This paradigm is universal, because it can be retraced in every tradition."