3 Now this same general condition of the times, this ceaseless agitation in various ways of the problem of educational rights and systems in different countries, the desire expressed to Us with filial confidence by not a few of yourselves, Venerable Brethren, and by members of your flocks, as well as Our deep affection towards youth above referred to, move Us to turn more directly to this subject, if not to treat it in all its well-nigh inexhaustible range of theory and practice, at least to summarize its main principles, throw full light on its important conclusions, and point out its practical applications.
Source: Divini Illius Magistri (Vatican.va)