 Like every theory of justice (for example those of Locke, Rousseau, and Mill), justice as fairness requires an account of citizens’ fundamental interests: what citizens need qua citizens. Rawls derives his account of primary goods from the conception of the citizen as free and equal, reasonable and rational. Primary goods are essential for developing and exercising the two moral powers, and are useful for pursuing a wide range of specific conceptions of the good life. Primary goods are these: