The development of countries is not limited solely to the economic issue – cultural and social advancement, based on the foundation of demographic growth, are at least equivalent components of this process. However, demographic development is not possible without restoring the importance of the family as the basic and most important social institution, as it was understood for centuries by thinkers who created the basic concepts of our civilization, such as Aristotle or Saint. Thomas of Aquinas. Lack of demographic development and family breakdown are a huge socio-economic cost. These costs are borne by the state in order to counteract the effects of this phenomenon (especially in countries where the idea of ​​the welfare state is strongly developed) and are manifested in the costs of lost opportunities – human attractiveness, productivity, but also investment and consumption potential. The collapse of the family, the basic social unit, is primarily a threat to the cultural and, in the long run, also to the formal cohesion and existence of each country as an individual, independent entity. As part of the work of the Center for Research on Family and Demography, we will conduct socio-demographic research and propose systemic and legal solutions supporting the family both at the national and international level.