 Three factors then play a role in motivating the parties in the original position: (1) First, they aim to advance their determinate conception of the good, or rational plan of life, even though they do not know what that conception is. Moreover, they also seek conditions that enable them to exercise and develop their “moral powers,” namely (2) their rational capacities to form, revise and rationally pursue a conception of their good, and (3) their capacity to be reasonable and to have an effective sense of justice. These are the three “higher-order interests” the parties to Rawls’s original position aim to promote in their agreement on principles of justice. 