This collection of papers published in the last forty years documents the authors journey from philosophy of language to text theory and then to an empirical science of literature, ending with a concept of literary studies as a legitimate part of media culture studies. The main emphasis is placed on communication as a social system. The approach used in the book is strictly interdisciplinary in order to cope with the complexity of the different types of human communication, ranging from everyday talk to literary communication or advertising. Radical Constructivism provides the epistemological basis for this approach - a basis that has undergone important modifications in the course of the authors development.