Criminologists have been described as “Kings without countries” because their territories have never been delineated. It might be more adequate, and to be sure more humble, to regard criminology as a permanent guest who must dine, in order to survive, at other people's tables. Criminology draws its basic concepts and methodology from the behavioural sciences, biology and to some extent the history and sociology of criminal law. This is mainly due to the fact that crime is differently dealt with by various disciplines. An offence is first of all human behaviour which is in the realm of psychology, psychiatry and biology. It is also a social deviation and belongs, therefore, to the domain of sociology and social psychology; then it is an infringement of the criminal law dealt with by the policeman, the lawyer and the judge.