sentences:  However, he decided to stay in academia and refused the chance to become an actor though he kept his association with the National Youth Theatre during summer stints as an associate director, including 'Julius Caesar' which played in Germany in 1968.He joined the Open University in 1970 as a lecturer, but since then has been a visiting fellow at Griffith University, Brisbane, Australia, where he advised on distance teaching (1983) and co-authored a teaching module (1996) which now forms part of a taught MA both at Griffith and the Open University.He has been visiting professor at the University of Paris VIII (Vincennes-St.Denis) (1983–1984) and at the University of Calgary, Alberta, Canada (1988 and 1990).