Roy Harris's thoroughgoing attack on the presuppositions underpinning the dominant traditions of Western thought about language, and his advocacy of a radically reconceived linguistics focused on the idea that the linguistic sign is contextually created and interpreted as a function of the meaningful integration of communicative behaviour, have made him one of the most controversial figures in the field today. In the essays in this volume Naomi S. Baron, Bob Borsley, Philip Carr, David Fleming, Rom Harre, Anthony Holiday, John E. Joseph, Frederick J. Newmeyer, David R. Olson, Trevor Pateman, John Soren Pettersson and John R. Taylor offer a critical examination of various aspects and implications of Harris's views, in reponse to which Harris contributes an article that both engages with his critics and develops some of the major themes of his work.