 In his writings after 1945, most especially in Vom Ursprung und Ziel der Geschichte (The Origin and Goal of History, 1949) and Die Atombombe und die Zukunft des Menschen (The Atom Bomb and the Future of Mankind, 1961), Jaspers structured his work quite explicitly as a humanist doctrine. From this time on, moreover, he attached greater importance to the social and collective conditions of human integrity and he tended to tone down his earlier construction of interiority as the place of human freedom. In fact, even the term Existenz became increasingly scarce in his post-1945 publications, and it was replaced, to a large extent, by ideas of shared humanity, founded, not in the decisive experiences of inner transformation, but in the resources of culture, tradition and ethically modulated political life. Central to these later works, consequently, was not only a turn towards humanistic reflection, but also an inquiry into the politics of humanism and the distinctively human preconditions of political existence.