But the first duty of police is to establish peace. Peace is established by guaranteeing to every person security in the possession of property. In this and in other ways, the priority of property is presupposed and guaranteed before political economy even begins. Benevolence becomes voluntary. Moderns like Smith discard caritas as a name for the human duty to cooperate and share with others, and write instead about benevolence.
Benevolence is classified as an imperfect duty.
Sympathy backs 18 th century British common sense. Sympathy plays a major role in Smith s thought, serving as a touchstone to resolve precise issues in the law of contracts and the law of property rights. Exactly which expectations of the parties are legitimate is determined by reference to the sympathies of a bystander who is not a party. Thus sympathy which on the surface appears to be a principle of morals akin to a love ethic, functions on an operative level as an appeal to the common sense norms of a commercial society. Justice is redefined.