This book focuses on the question of relationality. Despite the numerous motifs introduced to the discourse pertaining to Margaret S. Archer's concept, we notice that some often reappear. What frequently appears is the concept of agency, closely related to the matter of the subject's reflexivity. We also include papers that refer to methodological dilemmas. However, all collected texts directly consider the essence of the concept of the human person and society in reaction to the ontology of the person proposed by Archer. The common thread and horizon of these elaborations is Archer's concept and Pierpaolo Donati's relational sociology. Thus, this publication seeks to gain broader public and open new research perspectives in sociology.