Rerum Novarum

The opening words and the title of the Encyclical issued by Leo XIII, 15 May, 1891, on the "Condition of Labour". Although the Encyclical follows the lines of the traditional teaching concerning the rights and duties of property and the relations of employer and employee, it applies the old doctrines specifically to modern conditions. Opening with a description of the grievances of the working classes, it proceeds to refute the false theories of the Socialists, and to …

…part of the traditional teaching for many centuries, it had never been stated with such precision and authority. As the years go by and thoughtful men realize more and more how difficult it is to define the full requirements of justice in the matter of wages, a constantly increasing number of persons look up on this statement of Leo XIII as the most fruitful and effective principle of industrial justice that has ever been enunciated.