Demographic insights presented by some of the most prominent representatives from the field of population science form the foundational knowledge of social and economic sciences, sociology, political science, and history. The book is a plea for an even greater consideration of demographics in politics. It reflects on six annual conferences of the German Society for Demography held between 2010 and 2016. Demographic change is certainly not our destiny, but it affects us all. One cannot escape the upheaval of society as a whole nor the changes in the micro-process of the family. The fundamental processes of change have social as well as political repercussions.