The passion to continually be on the move to seek new understanding is a characteristic of the field of family therapy and systemic thinking over the last forty years. Many professionals have moved around, more or less freely, in and out of this field. Some have made footprints that will last for a long time. One of these is Tom Andersen. From a position as professor in social psychiatry at the University of Tromso in northern Norway he has moved around the world participating with other professionals in their efforts to develop their work and seek wider horizons.' - Harlene Anderson and Per Jensen, from the Preface