These principles with due regard to time and place, must, in accordance with Christian prudence, be applied to all schools, particularly in the most delicate and decisive period of formation, that, namely, of adolescence; and in gymnastic exercises and deportment special care must be had of Christian modesty in young women and girls which is so gravely impaired by any kind of exhibition in public.
Pope Pius XIEducation belongs pre-eminently to the church ... neutral or lay schools from which religion is excluded are contrary to the fundamental principles of education.
Pope Pius XIThis [the opening of the Vatican City radio station built by Marconi earlier in 1931] was a new demonstration of the harmony between science and religion that each fresh conquest of science ever more luminously confirms, so that one may say that those who speak of the incompatibility of science and religion either make science say that which it never said or make religion say that which it never taught.
Pope Pius XIIn the first place, it is obvious that not only is wealth concentrated in our times but an immense power and despotic economic dictatorship is consolidated in the hands of a few, who often are not owners but only the trustees and managing directors of invested funds which they administer according to their own arbitrary will and pleasure. This dictatorship is being most forcibly exercised by those who, since they hold the money and completely control it, control credit also and rule the lending of money.
Pope Pius XI