Abstract
The article is an outline of some of the key thoughts of two Dutch Calvinist philosophers who have had a major impact on sections of modern evangelicalism. These key thoughts are sphere sovereignty, closely associated with Kuyper but adopted enthusiastically by Dooyeweerd as well, and modal aspects, which is particularly associated with Dooyeweerd. The impact of these key thoughts on how we should view social structures is given, focusing particularly on the state, the church, the family and marriage, and the university. There is one key reservation about this line of thinking, held because so prevalent among in the Neo-Calvinist circles so inspired by Kuyper and Dooyeweerd, that of pillarisation. It is argued briefly here, effectively as a postscript, that this represents a line of thinking that does not belong to sphere sovereignty or to modal aspects.