The relationship between religions (and worldviews) and the political community is not fixed, but always in evolution. The questions, central in this research project, are 1. What kind of recent evolutions challenge the relationship between religions (worldviews) and the political community in Belgium? 2. What kind of historical and philosophical perspectives are developed in the past, to guide these evolutions and challenges? 3. What are the relevant normative arguments and reflections, if we want to 'choose' a particular model or perspective?