For over 18 years the Styrian Franz Küberl was president and as such head of the most famous aid agency in Austria, the Caritas. At the same time he acted as director of the Styrian Caritas. In this function, which he used to hold for most of his career, he stood up relentlessly for the poor, the socially weak, for the excluded and the distressed. Over his period in office he developed a profound social policy, which he represented courageously and persistently. To draw attention to his voice, he stood in contact with Austrian federal politicians. Therefore Küberl was far more than the manager of a company he was politically active, a believing Catholic and a theologian. The documents of his correspondence, which lie in the archive of the Caritas in Vienna as well as in Graz, served as material object for this thesis. On the level of the formal object the thesis pays attention to his concrete social policy, which cant be separated from his ecclesio-political commitment. He polarized simply by holding his ecclesiastical office, in which he had to take a stand politically. As representative of the Catholic church in Austria he consequently influenced society. In a first step the thesis outlined the history of the Caritas, beginning with early Christianity and Late-Antiquity, over the Middle Ages to Modern Age and the long 19th century, finally focusing the history of the Caritas in Austria and Styria in the 20th century. After that the thesis draws a sketch on Franz Küberls life and career that leads to a terminological depiction of his understanding of caritas, church and poverty. The third chapter takes into account his statements on social justice, refugees, asylum, integration, families, single parents, child care, amendments and draft law, international assistance and development policy respectively.