In this Ethic, Fichte starts from the common consciousness of finding himself willing, in order to rise from there to the first principle: the spontaneity of the I or freedom, and his rational consciousness or categorical imperative. In the second chapter, more in the first two sections of the third, he studies and deduces the material conditions necessary for the effective realization of freedom (an objective world, an individual body, individuality and community), as well as the process of elevation From the real Self to the moral conscience, the criterion of correct conviction and the essence of radical evil. In the third and last section, the division of moral duties is established and a compendium of them is offered.