"The presence of others who see what we see and hear what we hear assures us of the reality of the world and ourselves, and while the intimacy of a fully developed private life, such as had never been known before the rise of the modern age and the concomitant decline of the public realm, will always greatly intensify and enrich the whole scale of subjective emotions and private feelings, this intensification will always come to pass at the expense of the assurance of the reality of the world and men." (Hannah Arendt, "The Public Realm: The Common", in The Human Condition. Chicago, University of Chicago, 1958. pp. 50-67.)