Introduction -- Historical Considerations -- Fifty years of Gestalt therapy -- Theorising and knowledge in psychology -- Integration in psychotherapy: epistemological and methodological considerations -- A comparative analysis of the Perls, Hefferline, and Goodman theory of Self and Fairbairn's endopsychic structure in terms of Greenberg and Mitchell's (1983) four fundamental problems -- Propositions for an Object Relational Gestalt Therapy -- Epistemological and methodological preconditions for a Gestalt therapeutic system -- The linear-sequential vision of the Self in Perls, Hefferline, and Goodman: a critique -- The Self and object relations: a revision of Perls, Hefferline, and Goodman -- Gestalt psychotherapy: from object relations to hermeneutic dialogue -- Neuroscientific perspective of ORGT: neurodynamics of the Self in therapeutic dialogue -- ORGT and evidence-based practice -- Case Studies -- Introduction to the Case Studies -- Bob -- Brian -- Jade -- Appendix.