 It seems we do need to ground rights in some way. Grounding them in the common good seems promising, though we won’t know what rights this conception supports without knowing more about the content of the common good. Insofar as the common good is one in which people partake equally insofar as they are moral persons, this conception seems likely to support a conception of equal rights to those conditions necessary for developing and exercising moral powers of persons as agents. These claims about the content of the common good are reflected in Green’s brand of perfectionist liberalism.