In which publication did the great 19ty-century liberal philosopher John Stuart Mill explain the harm principle, of exercising power over others only to protect them from harm?
Harm principle The harm principle holds that the actions of individuals should only be limited to prevent harm to other individuals. John Stuart Mill articulated this principle in "On Liberty", where he argued that, "The only purpose for which power can be rightfully exercised over any member of a civilized community, against his will, is to prevent harm to others." An equivalent was earlier stated in France's "Declaration of the Rights of Man and of the Citizen" of 1789 as, "Liberty consists in the freedom to do everything which injures no one else; hence the exercise of the natural rights of each man has no limits except those which assure to the other members of the society the enjoyment of the same rights. These limits can only be determined by law."
Moral treatment Moral treatment was an approach to mental disorder based on humane psychosocial care or moral discipline that emerged in the 18th century and came to the fore for much of the 19th century, deriving partly from psychiatry or psychology and partly from religious or moral concerns. The movement is particularly associated with reform and development of the asylum system in Western Europe at that time. It fell into decline as a distinct method by the 20th century, however, due to overcrowding and misuse of asylums and the predominance of biomedical methods. The movement is widely seen as influencing certain areas of psychiatric practice up to the present day. The approach has been praised for freeing sufferers from shackles and barbaric physical treatments, instead considering such things as emotions and social interactions, but has also been criticised for blaming or oppressing individuals according to the standards of a particular social class or religion.