  This public or world-centered conception of politics lies also at the basis of the third feature stressed by Arendt, the distinction between public and private interests. According to Arendt, political activity is not a means to an end, but an end in itself; one does not engage in political action to promote one’s welfare, but to realize the principles intrinsic to political life, such as freedom, equality, justice, and solidarity. In a late essay entitled “Public Rights and Private Interests” (PRPI) Arendt discusses the difference between one’s life as an individual and one’s life as a citizen, between the life spent on one’s own and the life spent in common with others. She argues that our public interest as citizens is quite distinct from our private interest as individuals. The public interest is not the sum of private interests, nor their highest common denominator, nor even the total of enlightened self-interests. In fact, it has little to do with our private interests, since it concerns the world that lies beyond the self, that was there before our birth and that will be there after our death, a world that finds embodiment in activities and institutions with their own intrinsic purposes which might often be at odds with our short-term and private interests. The public interest refers, therefore, to the interests of a public world which we share as citizens and which we can pursue and enjoy only by going beyond our private self-interest.