This article provides an overview of the developments of criminal law and criminal sanctions during the last 50 years in Finland. It reflects the author’s experience as a criminal scientist and an expert in drafting criminal legislation during this period. The total reform if Penal Code in 1972–2003 was aimed at a more rational penal system, i.e. for efficient, just and humane criminal justice. An ambitious attempt was made to assess in a uniform and systematic way the goals, interests and values which the new Criminal Code should promote and protect. The existence of the criminal justice system was justified using utilitarian arguments. The structure and operation of the penal system cannot, however, be determined solely on the basis of it...