 There are different versions of this thin understanding of nationhood. What they all share is the downplaying of substantive commonalities of descent, culture and religion to the benefit of political and legal principles and  institutions.[16]  Still there are variations: David Miller defends a conception of public culture that goes beyond the political to cover social norms (such as honesty in filling tax returns) and may include certain cultural ideals (for instance, “religious beliefs or a commitment to preserve the purity of the national language” (Miller 1995, 26)) while Kymlicka argues that an appropriately thin conception of nationhood also discards assumptions that “members of the nation should share the same […] life-style” (Kymlicka 2003, 273).