Steichen’s choice of photographs assumes a human condition or a human nature shared by everybody. By purporting to show that individuals are born, work, laugh, and die everywhere in the same way, “The Family of Man” denies the determining weight of history—of genuine and historically embedded differences, injustices, and conflicts. Arbus’s photographs undercut politics just as decisively, by suggesting a world in which everybody is an alien, hopelessly isolated, immobilized in mechanical, crippled identities and relationships. The pious uplift of Steichen’s photograph anthology and the cool dejection of the Arbus retrospective both render history and politics irrelevant. One does so by universalizing the human condition, into joy; the other by atomizing it, into horror.
— Susan Sontag, On Photography, 1977