 Thus it matters to Kant that we perform the duties of virtue with the properly cultivated emotions. But to do so is not to develop our nature so that the two parts of us, reason and passion, are unified and speak with the same voice. Rather, if we perform our duties of virtue in the right spirit, one part of us, reason, retains control over the other part, passion. Kant writes that virtue “contains a positive command to a man, namely to bring all his capacities and inclinations under his (reason’s) control and so to rule over himself … for unless reason holds the reins of government in its own hands, man’s feelings and inclinations play the master over him” (Kant, Metaphysics of Morals, Ak. 408).