 The next stage of corruption is impurity. A person with an impure will does not attempt to perform morally right actions just because these actions are morally right. Instead, she performs morally right actions partly because these actions are morally right and partly because of some other incentive, e.g., self-interest. Someone with an impure will performs morally right actions, but only partly for the right reason. Kant believes that this form of defect in the will is worse than frailty even though the frail person does wrong while the impure person does right. Impurity is worse than frailty because an impure person has allowed an incentive other than the moral law to guide her actions while the frail person tries, but fails, to do the right thing for the right reason (Kant 1793, Bk I, 25–26).