This book is a reaction to the "refugee-crisis" in 2015 and the ensuing demand of science and practice for a stronger focus on the potentials and abilities of refugees in the integration process. To direct the focus of integration theories away from the weaknesses and towards the capabilities of the refugees, Heckmann's Integration Theory – based on a comparative analysis – is related to Nussbaum's Capabilities Approach via interlinking both theories. The results show that an integration theory with the focus on the capabilities of the refugees empowers the individual immigrant to become a valued and active participant in the integration process. This study was researched using the situation in Germany as an example, but the results are transferable to social integration contexts in other countries as well and may give non-governmental organisations, social workers and government agencies an orientation for their future aid programming.