Mental Medicine

A large proportion of both men and women, possessing an average share of intelligence, might become successful practitioners, with a little instruction, directing them how to use the powers they possess. In fact, a large number of persons of both sexes, in a quiet and unostentatious way, are successfully practising this apostolic mode of healing the sick without fee or reward, actuated solely by a benevolent desire of relieving human suffering, and by an irrepressible love of doing good. Some, by a more public career, have attracted general notice, and attained to fame. Such are scattered all along the world's history. Such were some of the Jewish prophets, who cured disease by this divine method.

Mental Medicine: A Theoretical and Practical Treatise on Medical Psychology
REV. Warren Felt Evans 1885