 Green might simply be invoking this familiar concern that one has for one’s intimate associates. If I do care about the welfare of my associates, and these desires survive deliberative endorsement, then, according to Green, I make their welfare part of my own personal good (PE §§91–92). But this may make an agent’s interest in others dependent on her contingent desires. To explain how the demands of the common good are categorical imperatives, we need to explain how pursuit of a common good is an ingredient in self-realization.