This study provides a history of the concept of form in the twentieth century CE, focusing on the rise and character of relational theory. To some extent drawing on older traditions, relational theory accepts some aspects of modern particularism but moves beyond it by holding that relations simultaneously separate and connect. Particularity and generality are seen as aspects of relationality, and forms are viewed as complexes of relations. Prominent features of a relational view include: an avoidance of rigid structures through an orientation toward probability; multiperspectivity;...