Kant presents the thesis of the moral order of the incentives within its doctrine on the moral evil. The question of evil holds a peculiar description, which does not translate (as one might hope) by a bounce or absence of the law of morality, but a reversal of the moral order of incentives: the man subordinates the importance of moral law, prefering the inclination. This characterization of evil, leads also to a notion of moral good is linked to a moral order in which the importance of the law is to put in front to the influence of inclination. The moral value, therefore, is closely linked to how the man articulates, in terms of hierarchy, the incentives. The following article aims to emphasize on the one hand, the degrees of the propensity to evil, while "steps" that lead to inversion of the order of incentives, and on the other hand, to investigate the notion of moral order: the cause of their inclusion and the internal consistency of their characterization.